Apple Watch Series 4: Your Perfect Fitness & Style Companion in the USA

Specifications & Highlights
💰 New Price: Apple Watch Series 4 - USA199/- US$ |
🪙 Used Price: Apple Watch Series 4 - USA90/- US$ |
📅 Release DateOctober 2018 |
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🤖 Operating SystemwatchOS 5 |
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📦📦 Apple Watch Series 4 - Available variants in USAApple Watch Series 6 | Apple Watch Series 5 | Apple Watch Series 9 | Apple Watch Series 3 | Apple Watch Series 2 | Apple Watch Series 1 | Apple Watch Series 7 | Apple Watch Series 8 | |
Pros & Cons
✅ Sleek and Lightweight Design Benefit: The Series 4 is super comfortable to wear all day, whether you’re at the gym or in a meeting—no bulkiness here! |
✅ Crisp OLED Display Benefit: The screen is bright and sharp, making notifications and workouts easy to read even in direct sunlight. |
✅ ECG and Heart Rate Monitoring Benefit: A game-changer for health-conscious users—get accurate heart data and even detect irregular rhythms. |
✅ Fast Performance with S4 Chip Benefit: Apps load instantly, and scrolling is buttery smooth—no lag, even with multiple workouts tracked. |
✅ Great for Apple Ecosystem Users Benefit: Seamless integration with iPhone, iMessage, and Apple Pay—perfect if you’re already in the Apple world. |
✅ Improved Water Resistance Benefit: Swim or sweat without worry—it’s rated for 50 meters, so pool laps are no problem. |
✅ Fall Detection Feature Benefit: A lifesaver for older users or adventurers—automatically calls emergency services if you take a hard spill. |
❌ Battery Life Could Be Better Reason: Heavy GPS or workout use drains it fast—you’ll need nightly charging if you’re active. |
❌ No Always-On Display Reason: Annoying to raise your wrist or tap just to check the time—competitors like Samsung got this right. |
❌ Limited Watch Face Customization Reason: Apple’s selection feels restrictive compared to Android Wear’s endless options. |
❌ Expensive for Older Model Reason: Since newer Series exist, the price feels steep for tech that’s a few generations behind. |
❌ No Built-in Sleep Tracking Reason: You’ll need third-party apps to monitor sleep—kinda odd for a health-focused device. |
❌ Small Screen for Typing Reason: Replying to texts feels cramped unless you’re using voice dictation or quick replies. |
❌ No Cellular on Base Model Reason: GPS-only means leaving your phone behind isn’t an option unless you splurge on the cellular version. |
Our Verdict
Verdict
A sleek and timeless smartwatch that still holds its own in 2024, blending fitness tracking with everyday convenience—perfect for Apple fans who want reliability without the latest-gen price tag.
Summary
The Series 4 delivers smooth performance for workouts, notifications, and Apple Pay, though battery life is just okay for a full day. Its Retina display remains sharp, and the heart-rate sensor is accurate, but don’t expect always-on display or blood oxygen tracking.
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Display & Design
Stunning Retina Display
The Apple Watch Series 4 features a gorgeous Retina display that’s brighter and more vibrant, making it perfect for checking notifications, workouts, or even quick glances at your favorite apps.
Screen Size
Display Technology
Brightness
Force Touch
Feature | Detail |
---|---|
Resolution | 324x394 (40mm) |
Pixel Density | 326 PPI |
Always-On Display | No |
Glass Protection | Ion-X (Aluminum) |
Bezel Design | Slimmer bezels |
Camera Features
Stunning Retina Display
The Apple Watch Series 4’s Retina display is brighter and more vibrant, making it perfect for checking notifications or tracking workouts even in direct sunlight.
Heart Rate Sensor
ECG App
Fall Detection
Water Resistance
Feature | Detail |
---|---|
Display Size | 40mm/44mm |
Processor | S4 Chip |
Battery Life | Up to 18hrs |
Cellular Option | Available |
Workout Modes | Multiple Options |
WatchOS | Latest Updates |
Storage | 16GB |
Microphone & Speaker | Built-in |
Haptic Feedback | Customizable |
Bluetooth | 5.0 |
Emergency SOS | Quick Access |
Battery Performance
All-Day Battery Life
The Apple Watch Series 4 keeps up with your busy day, so you won’t need to constantly recharge—perfect for workouts, calls, and checking notifications without worry.
Battery Capacity
Fast Charging
Low Power Mode
Optimized Charging
Feature | Detail |
---|---|
Battery Type | Lithium-ion |
Standby Time | Up to 18 hours |
Workout Battery Drain | ~10% per hour |
Charging Method | Magnetic charging cable |
Power Reserve Mode | Time-only display |
Platform & Storage
Smooth Performance & Smart Storage
The Apple Watch Series 4 runs on watchOS, giving you buttery-smooth animations and smart storage management so you never run out of space for apps and music.
Fast Processor
Ample Storage
Optimized OS
Seamless Syncing
Feature | Detail |
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Operating System | watchOS 5 |
Chipset | S4 SiP |
Storage Capacity | 16GB |
Connectivity | Bluetooth 5.0 |
Water Resistance | 50m |
Battery Life | Up to 18hrs |
Display | OLED Retina |
Sensors | Optical HR, ECG |
Gaming Performance
Smooth Gaming Experience
The Apple Watch Series 4’s powerful S4 chip ensures lag-free gaming, so you can enjoy quick reactions and seamless gameplay right on your wrist.
Processor
Display
Battery Life
Storage
Feature | Detail |
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GPU | Custom Apple GPU |
Refresh Rate | 60Hz |
Water Resistance | 50m |
WatchOS Compatibility | Latest updates |
Haptic Feedback | Taptic Engine |
Drop Test
Military-Grade Durability
The Apple Watch Series 4 is built tough with military-grade materials, so you can rock it during workouts or daily hustle without worrying about drops or bumps.
Reinforced Ion-X Glass
50-Meter Water Resistance
Lightweight Aluminum Case
Ceramic Back
Feature | Detail |
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Drop Test Certification | MIL-STD-810G |
Impact Absorption | Redesigned internals |
Crack-Resistant Display | Ion-X strengthened |
Band Lock Mechanism | Secure fit |
Edge Protection | Raised bezels |
Haptic Feedback Alerts | Gentle taps |
Emergency SOS Trigger | Fall detection |
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Benchmarks
⚡Battery Life
18/24 - Long-lasting power
🖥️Display Quality
9/10 - Crisp visuals
⚙️CPU Performance
1200/1500 - Fast processing
🎮GPU Performance
4500/6000 - Smooth animations
🌡️Thermal Management
8/10 - Efficient cooling
💾Storage Speed
350/500 - Quick file access
🔗Benchmarks sourced from reliable platforms like Geekbench and AnTuTu ensuring accurate performance insights.
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FAQs
HowTo?
Quick Repair
Hardware Repair
Users Reviews
The ECG Feature Is Amazing. Worth Every Penny!
Works Perfectly With My IPhone 13. No Complaints!
Fall Detection Is A Great Safety Feature. Peace Of Mind For My Parents.
Works Great With Apple Music. Love The Convenience!
Perfect For Tracking My Runs And Heart Rate. Highly Recommend!
ECG Is A Game-changer. Worth The Upgrade From Series 3.
Works Seamlessly With My IPhone 14. No Issues So Far!
Love The Swim Tracking! Works Great In The Pool.
Works Perfectly With My Apple Ecosystem. No Regrets!
Fell Off My Bike And The Fall Detection Alerted My Wife. Amazing Feature!
The ECG Feature Is A Lifesaver. Highly Recommend!
Perfect For My Daily Runs. Heart Rate Monitor Is Accurate.
Works Great With My AirPods Pro. Fitness Tracking Is Spot-on.
The ECG Feature Is Amazing. Worth Every Penny!
Works Perfectly With My IPhone 12. No Complaints!
Fall Detection Is A Great Safety Feature. Peace Of Mind For My Parents.
Works Great With Apple Music. Love The Convenience!
Perfect For Tracking My Runs And Heart Rate. Highly Recommend!
ECG Is A Game-changer. Worth The Upgrade From Series 3.
Works Seamlessly With My IPhone 13. No Issues So Far!
Love The Swim Tracking! Works Great In The Pool.
Works Perfectly With My Apple Ecosystem. No Regrets!
Fell Off My Bike And The Fall Detection Alerted My Wife. Amazing Feature!
The ECG Feature Is A Lifesaver. Highly Recommend!
Perfect For My Daily Runs. Heart Rate Monitor Is Accurate.
Works Great With My AirPods Pro. Fitness Tracking Is Spot-on.
The ECG Feature Is Amazing. Worth Every Penny!
Works Perfectly With My IPhone 11. No Complaints!
Fall Detection Is A Great Safety Feature. Peace Of Mind For My Parents.
Works Great With Apple Music. Love The Convenience!
Perfect For Tracking My Runs And Heart Rate. Highly Recommend!
ECG Is A Game-changer. Worth The Upgrade From Series 3.
Works Seamlessly With My IPhone 12. No Issues So Far!
Love The Swim Tracking! Works Great In The Pool.
Works Perfectly With My Apple Ecosystem. Highly Recommend!
Fell Off My Bike And The Fall Detection Alerted My Emergency Contact. Lifesaver!
The Best Smartwatch For IPhone Users. No Complaints!
Heart Rate Monitor Is Super Accurate. Perfect For My Marathon Training.
Works Flawlessly With My AirPods. Fitness Rings Keep Me Motivated!
ECG Saved Me A Trip To The Doctor—worth Every Penny!
Works Great With My IPhone 13. Fall Detection Is A Nice Safety Feature.
Best Smartwatch I’ve Owned! Tracks My Runs Perfectly And Looks Stylish.
The Apple Watch Series 4 Is A Game-changer! Battery Lasts All Day And The ECG Feature Is A Lifesaver.
The Screen Is Crisp, But The Battery Could Last Longer.
The Screen Is Beautiful, But The Battery Could Be Better.
Battery Life Is Mediocre, But The Health Features Are Worth It.
Love The Notifications And Apple Pay. Battery Could Be Better.
The Screen Is Crisp, But The Battery Could Last Longer.
The Screen Is Beautiful, But The Battery Could Be Better.
Battery Life Is Mediocre, But The Health Features Are Worth It.
Love The Notifications And Apple Pay. Battery Could Be Better.
The Screen Is Crisp, But The Battery Could Last Longer.
The Screen Is Beautiful, But The Battery Could Be Better.
Battery Life Is Mediocre, But The Health Features Are Top-notch.
Love The Sleek Design! Wish It Had A Longer Battery Life Though.
Love The Customizable Faces! Wish It Had More Third-party App Support.
Love The Notifications And Apple Pay Integration. Battery Could Last Longer On Heavy Usage Days.
Perfect For Workouts! Heart Rate Monitor Is Accurate, But Siri Is Slow Sometimes.
Got It As A Gift And I’m Obsessed! Works Seamlessly With My IPhone. Sleep Tracking Could Be Better.
Screen Is Gorgeous And The Fitness Tracking Is Spot-on. Wish It Had Always-on Display Though.
Love The Design, But The Battery Drains Too Fast When Using GPS. Still A Solid Upgrade From Series 3.
Love The Design, But The Battery Life Is Just Okay.
Battery Drains Too Fast When Using GPS. Otherwise Solid.
Love The Fitness Tracking, But The Watch Feels Heavy.
Battery Life Is Decent, But Not As Good As Newer Models.
The Band Is Uncomfortable For All-day Wear. Otherwise Great.
Love The Watch Faces, But The Battery Drains Too Fast With Workouts.
Great For Fitness, But The Lack Of Blood Oxygen Monitoring Is A Letdown.
Notifications Are Handy, But Siri Is Hit Or Miss.
The ECG Feature Is Impressive, But The Watch Feels Bulky.
Battery Drains Too Fast When Using GPS For Hikes. Otherwise Great.
Love The Fitness Tracking, But The Screen Scratches Too Easily.
Works Well, But The Lack Of Always-on Display Is Annoying.
The Screen Is Gorgeous, But The Battery Drains Fast With Workouts.
The Speaker Is Too Quiet For Calls. Otherwise, It’s A Great Watch.
Love The Design, But The Battery Life Is Just Okay.
Battery Drains Too Fast When Using GPS. Otherwise Solid.
Love The Fitness Tracking, But The Watch Feels Heavy.
Battery Life Is Decent, But Not As Good As Newer Models.
The Band Is Uncomfortable For All-day Wear. Otherwise Great.
Love The Watch Faces, But The Battery Drains Too Fast With Workouts.
Great For Fitness, But The Lack Of Blood Oxygen Monitoring Is A Letdown.
Notifications Are Handy, But Siri Is Hit Or Miss.
The ECG Feature Is Impressive, But The Watch Feels Bulky.
Battery Drains Too Fast When Using GPS For Hikes. Otherwise Great.
Love The Fitness Tracking, But The Screen Scratches Too Easily.
Works Well, But The Lack Of Always-on Display Is Annoying.
The Screen Is Gorgeous, But The Battery Drains Fast With Workouts.
The Speaker Is Too Quiet For Calls. Otherwise, It’s A Great Watch.
Love The Design, But The Battery Life Is Just Okay.
Battery Drains Too Fast When Using GPS. Otherwise Solid.
Love The Fitness Tracking, But The Watch Feels Heavy.
Battery Life Is Decent, But Not As Good As Newer Models.
The Band Is Uncomfortable For All-day Wear. Otherwise Great.
Love The Watch Faces, But The Battery Drains Too Fast With Workouts.
Great For Fitness, But The Lack Of Blood Oxygen Monitoring Is A Letdown.
Notifications Are Handy, But Siri Is Hit Or Miss.
The ECG Feature Is Impressive, But The Watch Feels Bulky.
Battery Drains Too Fast When Using GPS For Hikes. Otherwise Great.
Love The Fitness Tracking, But The Screen Scratches Too Easily.
Works Well, But The Lack Of Always-on Display Is Frustrating.
Great For Notifications, But The Band Pinches My Wrist.
Screen Is Responsive, But The Battery Drains Fast With Always-on Workouts.
The Speaker Is Too Quiet During Calls. Otherwise, It’s A Fantastic Watch.
Battery Life Is Decent, But Charging Every Night Is Annoying.
Fast And Smooth, But The Lack Of Blood Oxygen Monitoring Is A Bummer.
ECG Works Great, But The Band Feels Cheap For The Price. Apple Should Include A Better One.
Sleep Tracking Is Inaccurate. Disappointed For The Price.
Screen Cracked After A Minor Drop. Durability Is Disappointing For The Cost.
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User Experiences
Emily Chen
19 | Austin, Texas
College Student
Explore Story
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⭐ Reason for Purchase
Birthday gift to track campus life and study habits
📌 Purchase Motivation
Saw TikTok videos about productivity hacks using the watch
⭐ Research or Comparison Before Buying
Almost got SE model but splurged for always-on display
⭐ Place of Purchase & Why
Amazon Prime Day deal with student discount
⭐ First Unboxing & Setup Reaction
So excited I filmed an unboxing for my Insta story!
⭐ Initial Impressions (Look & Feel)
The pink sand sport band is cuter in person than online
⭐ First Week Usage
Used Pomodoro timer apps nonstop during midterms week
🚀 Daily Usage Experience
Class notifications vibrate discreetly during lectures - lifesaver
⭐ Features Found Most Useful
Calendar alerts, sleep tracking, and Apple Pay at campus vending machines
⭐ Any Difficulties Faced
Battery anxiety until I learned to optimize settings
⭐ Experience Compared to Previous Device
My hand-me-down Series 2 couldn't run the latest study apps
⭐ Performance in Profession or Personal Life
Actually improved my GPA by tracking study sessions
⭐ Social or Lifestyle Impact
Joined Apple Watch study groups - we compete on stand hours
⭐ Any Accessories Used or Needed
Got a glitter case from Etsy for sorority events
⭐ Overall Satisfaction & Personal Recommendation
Perfect for busy students - wish I bought sooner
Robert Greene
68 | Phoenix, Arizona
Retired Veteran
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⭐ Reason for Purchase
Family insisted for health monitoring after minor stroke
📌 Purchase Motivation
Doctor recommended ECG monitoring during recovery
⭐ Research or Comparison Before Buying
Almost got simpler medical alert device but daughter convinced him
⭐ Place of Purchase & Why
Costco - wanted their extended warranty and easy returns
⭐ First Unboxing & Setup Reaction
Took me and my son-in-law an hour to set up all the health features
⭐ Initial Impressions (Look & Feel)
Lighter than my old diving watch - display is easier to read
⭐ First Week Usage
Kept checking heart rate obsessively - had to learn to trust it
🚀 Daily Usage Experience
Medication reminders are louder than expected - wakes me sometimes
⭐ Features Found Most Useful
ECG, irregular rhythm notifications, and emergency SOS
⭐ Any Difficulties Faced
Had to increase text size and disable some animations
⭐ Experience Compared to Previous Device
My 20-year-old Timex never needed charging but couldn't save my life
⭐ Performance in Profession or Personal Life
Gives my daughter peace of mind when I go hiking alone
⭐ Social or Lifestyle Impact
VFW buddies all got theirs after seeing mine - we compare step counts
⭐ Any Accessories Used or Needed
Got a charging dock that's easier for arthritic hands
⭐ Overall Satisfaction & Personal Recommendation
Would buy again just for the peace of mind it provides
Sarah Johnson
28 | Los Angeles, California
Fitness Trainer
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⭐ Reason for Purchase
Wanted a reliable fitness tracker with advanced health monitoring for clients
📌 Purchase Motivation
Saw a client using it during a session and loved the ECG feature
⭐ Research or Comparison Before Buying
Compared with Garmin Venu and Samsung Galaxy Watch - liked Apple's ecosystem integration
⭐ Place of Purchase & Why
Apple Store at The Grove - wanted hands-on demo and AppleCare+
⭐ First Unboxing & Setup Reaction
The packaging felt so premium! Pairing with my iPhone was smoother than I expected
⭐ Initial Impressions (Look & Feel)
Lighter than I thought - the aluminum case looks sleek with my sport band
⭐ First Week Usage
Used the workout tracking nonstop - loved how it auto-detected my yoga sessions
🚀 Daily Usage Experience
Morning heart rate checks became ritual. Notifications during training sessions are perfect
⭐ Features Found Most Useful
ECG, stand reminders, and custom workout metrics display
⭐ Any Difficulties Faced
Had to YouTube how to change watch faces initially
⭐ Experience Compared to Previous Device
My old Fitbit feels like a toy now - this tracks my water skiing metrics accurately
⭐ Performance in Profession or Personal Life
Clients love when I show them their real-time heart rate zones during HIIT
⭐ Social or Lifestyle Impact
Joined an Apple Watch cycling challenge group - more social than expected
⭐ Any Accessories Used or Needed
Bought extra sport loops and a charging stand for bedside
⭐ Overall Satisfaction & Personal Recommendation
9/10 - only wish battery lasted through weekend camping trips
Marcus Williams
42 | Chicago, Illinois
ER Nurse
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⭐ Reason for Purchase
Needed quick access to medical alerts during shifts
📌 Purchase Motivation
Hospital colleagues recommended fall detection feature
⭐ Research or Comparison Before Buying
Researched medical alert watches but wanted full smartwatch capabilities
⭐ Place of Purchase & Why
Best Buy - got open-box discount on stainless steel model
⭐ First Unboxing & Setup Reaction
First thing I did was enable emergency SOS - setup took 8 minutes
⭐ Initial Impressions (Look & Feel)
Heavier than expected but looks professional with scrubs
⭐ First Week Usage
Used the timer function constantly for medication reminders
🚀 Daily Usage Experience
Silent alarms vibrate perfectly during night shifts without disturbing patients
⭐ Features Found Most Useful
Fall detection, medication reminders, and voice memo dictation
⭐ Any Difficulties Faced
Had trouble enabling always-on display in clinical mode
⭐ Experience Compared to Previous Device
My Samsung Gear couldn't handle 12-hour shifts - this lasts my entire rotation
⭐ Performance in Profession or Personal Life
Actually caught an irregular heartbeat reading during my lunch break
⭐ Social or Lifestyle Impact
Wife feels safer knowing I have fall detection during bike commutes
⭐ Any Accessories Used or Needed
Bought Milanese loop for formal occasions
⭐ Overall Satisfaction & Personal Recommendation
Essential for healthcare workers - worth every penny
Aisha Thompson
31 | Portland, Oregon
Food Blogger
Explore Story
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⭐ Reason for Purchase
Needed hands-free camera control for cooking videos
📌 Purchase Motivation
Fellow creators praised the remote camera shutter feature
⭐ Research or Comparison Before Buying
Almost went with Galaxy Watch for better battery but preferred iOS integration
⭐ Place of Purchase & Why
Apple refurbished store - wanted savings without sacrificing warranty
⭐ First Unboxing & Setup Reaction
Immediately tested the camera remote - worked perfectly across my kitchen
⭐ Initial Impressions (Look & Feel)
The gold aluminum matches my kitchen backsplash oddly well
⭐ First Week Usage
Used voice memos constantly to capture recipe ideas on the fly
🚀 Daily Usage Experience
Timer function is perfect for multi-step recipes - different tones for each step
⭐ Features Found Most Useful
Camera remote, voice memos, and hands-free timer adjustments
⭐ Any Difficulties Faced
Had flour get in the crown once - now I use a screen protector
⭐ Experience Compared to Previous Device
My old Mi Band couldn't handle my professional needs at all
⭐ Performance in Profession or Personal Life
Cut my video setup time in half with remote shooting
⭐ Social or Lifestyle Impact
Followers love seeing my watch in behind-the-scenes stories
⭐ Any Accessories Used or Needed
Bought a chef-themed watch face from Etsy
⭐ Overall Satisfaction & Personal Recommendation
Game-changer for content creators - worth the investment
Jessica Park
24 | Seattle, Washington
Uber Driver
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⭐ Reason for Purchase
Needed navigation and alerts without touching phone while driving
📌 Purchase Motivation
Got tired of missing turns while checking phone GPS
⭐ Research or Comparison Before Buying
Almost bought cheaper used Series 3 but wanted always-on display
⭐ Place of Purchase & Why
Facebook Marketplace - found unopened gift at 30% off retail
⭐ First Unboxing & Setup Reaction
Set it up during a coffee break - took 15 minutes while parked
⭐ Initial Impressions (Look & Feel)
The Nike sport band is comfy for long driving shifts
⭐ First Week Usage
Haptic turn alerts are gentler than Google Maps' voice
🚀 Daily Usage Experience
Riders think I'm more professional when I check watch instead of phone
⭐ Features Found Most Useful
Turn-by-turn haptics, quick message replies, and ride tracking
⭐ Any Difficulties Faced
Had to adjust alert intensity - was too strong at first
⭐ Experience Compared to Previous Device
My old Wear OS watch would freeze during navigation
⭐ Performance in Profession or Personal Life
My acceptance rate improved since I don't miss ride pings anymore
⭐ Social or Lifestyle Impact
Other drivers at the airport charging station ask me about it
⭐ Any Accessories Used or Needed
Bought a dashboard mount charger for long shifts
⭐ Overall Satisfaction & Personal Recommendation
Essential for rideshare drivers - should be a tax write-off
David Rodriguez
57 | Miami, Florida
Construction Site Manager
Explore Story
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⭐ Reason for Purchase
Needed durable device for job site communications
📌 Purchase Motivation
Foreman showed how he uses walkie-talkie feature
⭐ Research or Comparison Before Buying
Almost got Casio tough smartwatch but wanted Siri integration
⭐ Place of Purchase & Why
Local carrier store - needed cellular plan for standalone use
⭐ First Unboxing & Setup Reaction
My granddaughter helped me pair it - she laughed at my tech struggles
⭐ Initial Impressions (Look & Feel)
Surprisingly comfortable with the rugged band I bought
⭐ First Week Usage
Used the loud speakerphone feature daily in noisy sites
🚀 Daily Usage Experience
Weather complications help plan outdoor work - rain alerts are precise
⭐ Features Found Most Useful
Noise level alerts, hands-free calls, and sunrise/sunset tracking
⭐ Any Difficulties Faced
Had to disable raise-to-wake because it activated too often
⭐ Experience Compared to Previous Device
My old G-Shock was tougher but couldn't receive blueprint PDFs
⭐ Performance in Profession or Personal Life
Crew thinks I'm high-tech now - they ask me to set timers for breaks
⭐ Social or Lifestyle Impact
Wife likes that I can't miss her calls anymore
⭐ Any Accessories Used or Needed
OtterBox case saved it from three concrete drops already
⭐ Overall Satisfaction & Personal Recommendation
Built better than expected - survives my tough job
Experts Reviews
Ash R.
iPhone Expert & Reviewer
View Expert Review
+
Benchmark Scores
The Apple Watch Series 4 still holds up surprisingly well in benchmarks, especially for a smartwatch. Geekbench scores show it outperforming older models, thanks to the S4 chip. It’s not as fast as the latest Series 9, but for daily tasks like notifications, fitness tracking, and even light apps, it
Build Quality & Materials
The Series 4’s build is classic Apple—premium and sturdy. The aluminum or stainless steel options feel solid, and the curved edges make it comfortable for all-day wear. I’ve worn mine during workouts, and it’s held up without scratches (though I’d still recommend a screen protector). The Digital Cro
Display Quality
The OLED Retina display is crisp and vibrant, even years later. At 977 sq mm (44mm model), it’s bigger than older Watches, making text and workouts easier to read. The always-on feature isn’t here (that came with Series 5), but the raise-to-wake is instant. Outdoor visibility is great—I used it on s
Camera System & Performance
No built-in camera, but it’s a pro at controlling your iPhone’s camera remotely. I’ve used it for group shots—the viewfinder on the Watch is tiny but functional. The lack of a camera isn’t a dealbreaker since it’s not meant for photography, but newer Watches offer better integration (like the Quick
Software & User Experience
watchOS 9 still runs smoothly on the Series 4, though some newer features (like the AFib history) are limited. The UI is intuitive—swiping between glances, using Scribble for texts, and the App Dock all work flawlessly. Battery life took a slight hit after updates, but it’s manageable. If you’re on
Battery Life & Charging
Battery life is decent—about 18 hours with typical use (notifications, a 30-min workout, and occasional apps). It charges fast (0–80% in ~1.5 hours), but sleep tracking drains it overnight. I’d recommend charging during showers. Newer Watches last longer, but for a day’s use, it’s fine.
Gaming & Graphics Performance
Gaming? On a Watch? Yeah, it’s limited. Simple games like *Rules!* or *Lifeline* run fine, but don’t expect Fortnite. The GPU in the S4 handles basic animations well, but this isn’t a gaming device. Stick to fitness and productivity apps.
Connectivity & Ports
GPS and cellular models available (though LTE drains battery faster). Bluetooth 5.0 is stable for calls and music. No ports—just the magnetic charger. Pairing with iPhones is seamless, but Android users are out of luck.
Durability & Protection
Water-resistant to 50m, so swimming is no problem. I’ve showered with mine for years with no issues. The screen is scratch-prone—mine has micro-abrasions, so a protector is wise. Avoid drops; the aluminum dents easily.
Price & Value Proposition
Used prices (~$100–$150) make it a steal for iOS users. It’s not the latest, but it’s the oldest Watch that feels modern. If you want ECG and fall detection without breaking the bank, this is it. Just don’t expect 5+ years of updates.
Erum Nawa
Mobile Tech Expert & Reviewer
View Expert Review
+
Benchmark Scores
The S4 chip in the Apple Watch Series 4 was a leap forward in 2018, and it still delivers snappy performance today. In side-by-side tests with a Series 3, apps like Starbucks and Overcast launch noticeably faster. Geekbench scores are about 30% higher than the S3, making it viable for watchOS 9. It
Build Quality & Materials
Apple nailed the design here—slimmer bezels and a larger screen than the Series 3, without adding bulk. The aluminum version is lightweight (perfect for runners), while the stainless steel feels luxurious. The back is ceramic, which resists skin irritation. My only gripe? The glossy screen attracts
Display Quality
The LTPO OLED display is bright (up to 1000 nits) and sharp. Text is legible even at tiny sizes, and watch faces like Infograph utilize the space well. It lacks always-on, but the raise-to-wake is so responsive I didn’t miss it much. Sunlight readability is excellent—no squinting during outdoor work
Camera System & Performance
No camera, but the remote camera control is handy for group photos. The live preview is lag-free, and you can tap to focus. It’s niche but useful for tripod shots. Newer Watches add Quick Take, but this gets the job done.
Software & User Experience
watchOS 9 runs smoothly, though some features (like the redesigned Workout app) are slower than on newer Watches. Notifications are crisp, and third-party apps like Dark Sky load without hiccups. Siri is hit-or-miss—sometimes it’s instant, other times it lags.
Battery Life & Charging
Expect a full day with moderate use (notifications, 45-min workout, music playback). Heavy GPS use drains it faster—my half-marathon tracking consumed 40%. Charging is quick (~90 mins), but overnight tracking requires a top-up before bed.
Gaming & Graphics Performance
Don’t buy this for gaming. Simple titles like *Trivia Crack* work, but anything 3D chugs. The GPU is fine for animations in fitness apps, but that’s it.
Connectivity & Ports
Bluetooth 5.0 offers stable connections up to 30 feet from my iPhone. LTE models are carrier-locked (annoying if you switch). No USB-C, just the proprietary charger.
Durability & Protection
Survived my sweaty gym sessions and pool swims. The Ion-X glass (aluminum model) scratches easier than sapphire (stainless steel). A case is wise for rough use.
Price & Value Proposition
At $100–$150 used, it’s a bargain for ECG and fall detection. Newer Watches offer better batteries and screens, but this is the cheapest way to get core Apple health features.
WhatsApp Support
Q&A with Experts
Yes! The Series 4 supports up to watchOS 9, but unfortunately, it won’t get watchOS 10. Still runs great though!
Absolutely! It’s water-resistant up to 50 meters—perfect for laps, but maybe skip the deep-sea diving.
Try restarting it and disabling background app refresh. Older batteries struggle with new updates—might be time for a replacement.
It depends on local regulations. Some countries approve it, others don’t. Check Apple’s regional health feature list.
Sort of! You need an iPhone for setup, but after that, it works solo for basics like workouts and music (if you have cellular).
Force restart by holding side + Digital Crown for 10 sec. If that fails, it might be a hardware issue—time for a Genius Bar visit.
Only if it’s cheap! It’s snappy but lacks newer features like blood oxygen monitoring. Great for basics, though.
Unpair it from the old phone first via the Watch app. If that doesn’t work, reset network settings on your iPhone.
Nope! Only Series 7 and newer work with MagSafe. Stick to the old puck charger—it’s slower but reliable.
Pretty solid for wrist-based tracking! But for hardcore training, a chest strap is still king.
Delete unused apps and old texts. Also, turn off Photo Sync in the Watch app. You’re stuck with 16GB, so manage wisely!
Nah, that’s a Series 5 and up feature. Raise your wrist like it’s 2018!
Yep! Any 38mm/40mm or 42mm/44mm bands fit (depending on your model). Knockoffs are hit-or-miss, though.
Make sure the band is snug and your wrist is flat. Calloused or tattooed skin can mess with readings too.
Go to Watch app > Notifications > Customize per app. Pro tip: Theater Mode silences *all* buzzes.
Only if you have the cellular model! The GPS-only version needs your phone in Bluetooth range.
It’s decent indoors, but windy days or busy streets? Good luck. AirPods are your best bet.
Hold the side button until power options appear, then hold the Digital Crown. Boom—app closed!
Nope! Just avoid the thick, rubbery ones. Tempered glass works best.
Nope—for security, you *must* double-click the side button first. No lazy payments here!
Check if "Theater Mode" or "Do Not Disturb" is on. Also, disable "Wake Screen on Wrist Raise" if it’s too sensitive.
Run it under warm water while spinning it. If it’s *really* gross, a soft toothbrush + mild soap works.
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Developer Resources
Acessories
✅ Apple Watch Series 4 Magnetic Charging Dock Keeps your watch charged and ready with a sleek stand that doubles as a nightstand clock |
✅ Apple Watch Series 4 Sport Loop Band Soft, breathable fabric band for comfortable all-day wear, perfect for workouts |
✅ Apple Watch Series 4 Screen Protector Tempered glass shield to prevent scratches and cracks on your watch face |
✅ Apple Watch Series 4 Waterproof Case Protects your watch during swimming or intense workouts, up to 50 meters |
✅ Apple Watch Series 4 Portable Charger Compact power bank designed specifically for on-the-go charging |
✅ Adjustable stand to keep your watch upright while charging or using Nightstand mode |
✅ Apple Watch Series 4 Leather Band Elegant leather strap for a professional or stylish look |
✅ Apple Watch Series 4 Bumper Case Shock-absorbent case to protect against drops and impacts |
✅ Apple Watch Series 4 Car Mount Secure holder for your watch while driving, perfect for GPS navigation |
✅ Apple Watch Series 4 Charging Cable (2m) Extra-long cable for flexible charging at home or office |
✅ Apple Watch Series 4 Cleaning Kit Safe tools and solution to keep your watch screen and band clean |
✅ Apple Watch Series 4 Travel Case Compact case to protect your watch and bands while traveling |
Security Features
Go to iPhone’s Watch app > General > Enable “iCloud Backup.” Ensure your iPhone is backed up to iClo
Go to Settings > Passcode > Set Up Face ID. Follow on-screen instructions to scan your face, then co
Enabled by default—no setup needed. Data stays encrypted on Apple servers and your devices.
Enable in iPhone’s Find My app > Devices > Apple Watch > Turn on “Find My Network.”
Automatically enabled—no setup needed. The system verifies integrity each time the watch powers on.
Set up via iPhone: Settings > [Your Name] > Password & Security > Turn on 2FA.
Manage via iPhone’s Watch app > Privacy > Toggle permissions per app.
Enable in the Watch app on iPhone: My Watch tab > Find My > toggle on Find My Watch.
Enable/disable in iPhone’s Watch app > General > Wi-Fi > Choose networks manually.
Hold side button until slider appears, then drag to call—or set up auto-call in Watch app > SOS.
Hold side button until SOS slider appears, or enable Auto Call in Settings > SOS.
Set via Watch Settings > Passcode > Turn On. Enable “Erase Data” for added security.
Adjust in iPhone’s Fitness app > Sharing > Toggle visibility for contacts.
Automatically enabled when Find My Watch is on. Requires your credentials to unpair or erase.
Enable in Watch Settings > Siri > Toggle “Listen for ‘Hey Siri’” or “Press Crown.”
Disable in iPhone’s Watch app > Privacy > Apple Advertising > Turn off “Personalized Ads.”
Data is encrypted by default—no setup required. Unlocks only with your passcode or paired iPhone.
Enabled automatically when Find My Watch is active—no extra steps needed.
Ensure iMessage/FaceTime are on in iPhone’s Watch app > Messages or Phone.
Enable in iPhone’s Watch app > General > Software Update > Toggle “Automatic Updates.”
Set up in iPhone’s Health app > Medical ID > Edit > Enable “Show When Locked.”
Go to iPhone’s Watch app > General > Enable “iCloud Backup.” Ensure your iPhone is backed up to iClo
Go to Settings > Passcode > Set Up Face ID. Follow on-screen instructions to scan your face, then co
Enabled by default—no setup needed. Data stays encrypted on Apple servers and your devices.
Enable in iPhone’s Find My app > Devices > Apple Watch > Turn on “Find My Network.”
Automatically enabled—no setup needed. The system verifies integrity each time the watch powers on.
Set up via iPhone: Settings > [Your Name] > Password & Security > Turn on 2FA.
Manage via iPhone’s Watch app > Privacy > Toggle permissions per app.
Enable in the Watch app on iPhone: My Watch tab > Find My > toggle on Find My Watch.
Enable/disable in iPhone’s Watch app > General > Wi-Fi > Choose networks manually.
Hold side button until slider appears, then drag to call—or set up auto-call in Watch app > SOS.
Hold side button until SOS slider appears, or enable Auto Call in Settings > SOS.
Set via Watch Settings > Passcode > Turn On. Enable “Erase Data” for added security.
Adjust in iPhone’s Fitness app > Sharing > Toggle visibility for contacts.
Automatically enabled when Find My Watch is on. Requires your credentials to unpair or erase.
Enable in Watch Settings > Siri > Toggle “Listen for ‘Hey Siri’” or “Press Crown.”
Disable in iPhone’s Watch app > Privacy > Apple Advertising > Turn off “Personalized Ads.”
Data is encrypted by default—no setup required. Unlocks only with your passcode or paired iPhone.
Enabled automatically when Find My Watch is active—no extra steps needed.
Ensure iMessage/FaceTime are on in iPhone’s Watch app > Messages or Phone.
Enable in iPhone’s Watch app > General > Software Update > Toggle “Automatic Updates.”
Set up in iPhone’s Health app > Medical ID > Edit > Enable “Show When Locked.”
Special Features
feature emoji Feature NameFeature Detail Benefit: feature benefit |
--- ------ Benefit: --- |
� Fall Detection SOSAutomatically Calls Emergency Services If You Take A Hard Fall And Don’t Move For 60 Seconds. Benefit: Perfect for clumsy folks or seniors—your watch becomes a silent guardian that’s got your back when you take a spill. |
💓 ECG On WristTake A Medical-grade Electrocardiogram Anytime, Anywhere Just By Touching The Digital Crown. Benefit: Skip the doctor’s waiting room—get instant heart rhythm alerts so you can catch AFib early like a health detective. |
🔊 Noise AlertsYour Watch Warns You When Decibel Levels Hit Harmful Volumes (like Concerts Or Construction Sites). Benefit: Save your eardrums from that deafening subway screech or your buddy’s terrible karaoke nights. |
🌬️ Breathe RemindersGentle Nudges To Pause And Take Mindful Breaths Throughout Your Chaotic Day. Benefit: Because even superheroes need to chill—this is your 60-second work-from-home stress vacation. |
🌊 Water LockLocks The Screen During Swims So Accidental Splashes Don’t Trigger Taps. Benefit: Swim laps without your watch freaking out from water—it’s basically Aquaman mode. |
🎭 Theater ModeSilences Raises And Keeps The Screen Dark Until You Tap It (no More Glowing Watch In Movies). Benefit: Stealth-mode for date nights—no more angry shushes when your wrist lights up during *Oppenheimer*. |
📻 Walkie-TalkieInstantly Voice-chat With Other Apple Watch Pals Like A 90s Kid With A Secret Spy Gadget. Benefit: Bug your bestie during meetings with random “psst” messages—no typing required. |
♀️ Cycle TrackingLog Menstrual Cycles, Symptoms, And Fertility Windows With Discreet Vibration Alerts. Benefit: Ditch the awkward period apps—your wrist knows when Aunt Flo’s visiting before you do. |
🧭 Compass BacktrackRetrace Your Steps If You Get Lost Hiking By Following GPS Breadcrumbs. Benefit: For when your “shortcut” turns into a *Blair Witch* sequel—find your way back to civilization. |
🧼 Handwashing Timer20-second Countdown With Haptic Feedback So You Scrub Like A Surgeon. Benefit: COVID made us all germaphobes—now your watch nags you to wash properly like a mom. |
😴 Sleep Wind DownGradually Dims Notifications And Switches To Sleep Mode For Better Zzz’s. Benefit: No more 3AM Twitter doomscrolling—your watch tucks you in like a techy bedtime story. |
🤖 Siri Raise To SpeakJust Lift Your Wrist And Mutter To Siri Without Saying “Hey Siri.” Benefit: Laziness level 100: summon your AI assistant like a wizard without even moving your lips. |
🆘 Emergency SOS SirenBlasts A 130dB Alarm And Flashes Your Location To Rescuers If You’re In Danger. Benefit: Hike safely—this siren could scare off bears *and* sketchy parking lots. |
🩸 Blood Oxygen CheckMeasures Your SpO2 Levels In 15 Seconds (great For Altitude Or Illness). Benefit: Ski trip or COVID recovery? Know if you’re getting enough O2 or need to sit down. |
🗺️ Maps Haptic TurnsSilent Wrist Taps Tell You When To Turn Left/right While Biking Or Walking. Benefit: Navigate NYC streets like a local—no more staring at your phone like a lost tourist. |
📸 Photo RemoteUse Your Watch As A Shutter Button For Your IPhone Camera From Afar. Benefit: Group pics without sprinting back—finally, proof you *were* on that vacation. |
📱 Find My Phone PingMake Your Misplaced IPhone Play A Sound—even If It’s On Silent. Benefit: For when your phone’s buried in the couch *again* and you’re too lazy to dig. |
🪑 Stand Hourly NudgesVibrates If You’ve Been Sitting Too Long (because Netflix Marathons Aren’t Workouts). Benefit: Your watch is that annoying friend who won’t let you become a couch potato. |
☔ Rain AlertsGet Hyperlocal Weather Warnings Before You Get Caught In A Downpour. Benefit: Avoid looking like a drowned rat because “maybe it’ll pass” is never a good plan. |
🎨 Custom Watch FacesSwap Faces To Match Your Mood—from Minimalist To Info-packed. Benefit: Dress your wrist like a digital chameleon: professional by day, neon rave by night. |
🚗 Car Crash DetectionAutomatically Calls 911 If It Senses A Severe Collision (works With IPhone 14+). Benefit: Forgot your seatbelt? Your watch might just save your life before you even react. |
Official User Manuals
Pre checklist to buy used mobile
✅ Check the battery health in Settings > Battery > Battery Health Benefit: Ensures the watch lasts through a full day; below 80% may need replacement soon |
✅ Inspect the screen for scratches or cracks under bright light Benefit: Prevents buying a watch with display issues that affect visibility |
✅ Test the Digital Crown and side button for smooth operation Benefit: Confirms no mechanical wear that could impact navigation |
✅ Pair it with your iPhone to check for Activation Lock Benefit: Avoids getting locked out if the previous owner didn’t remove their Apple ID |
✅ Check for water resistance by looking at the seals (or water damage indicators) Benefit: Prevents buying a watch that can’t handle sweat or rain due to compromised seals |
✅ Test heart rate sensor and ECG functionality (if available) Benefit: Ensures health features work accurately—critical for fitness tracking |
✅ Verify cellular connectivity (if it’s a GPS + Cellular model) Benefit: Confirms the watch can make calls/texts independently without your iPhone nearby |
✅ Examine the band connectors for wear or looseness Benefit: Prevents band detachment issues during workouts or daily use |
✅ Ask for the original purchase receipt or proof of ownership Benefit: Reduces risk of buying a stolen or blacklisted device |
✅ Check for software updates and compatibility with your iPhone Benefit: Avoids outdated features or pairing issues with your current iOS version |
✅ Test microphone and speaker during a call or Siri command Benefit: Ensures clear communication for calls/voice assistant use |
✅ Look for uneven brightness or "burn-in" on the OLED screen Benefit: Identifies screen aging that could worsen over time |
Pro Secrets
Video Library
How We Supported iPhone Users
The website had a detailed comparison between Series 4 and newer models, which helped me decide to save money and buy this one instead. Battery life info was spot on!
Super easy to find replacement bands for my Series 4 here. The sizing guide saved me from ordering the wrong one.
I wish there were more troubleshooting tips for the ECG feature not working after updates. Otherwise decent info.
Found a hidden gem—your site explained how to use the fall detection for my elderly mom. Lifesaver!
The step-by-step guide to pairing with Android phones (yes, it’s possible!) was a game-changer.
Battery drains faster than my phone now. Your "maximize battery" tips only helped a little.
LOL at the "10 retro watch faces" article—made my 4 feel new again. More fun stuff like this!
Repair cost estimator was 100% accurate when my screen cracked. Saved me from overpaying at the mall kiosk.
Why no deep dive on swimming workouts? My pool laps keep pausing mid-session.
Your trade-in value calculator got me $25 more than Apple offered. Beer money!
The "hidden gestures" video made me feel like a tech wizard. Double-tap to switch apps is 🔥
Charging port started acting up—your diagnostic quiz told me it was just lint buildup. Free fix!