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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerApple Watch Series 10 vs Amazfit T-Rex 3
If you're looking for a smartwatch that combines premium features with cutting-edge technology, the Apple Watch Series 10 is your go-to option. It's the flagship model, boasting a 1.9" display with stunning 2000 nits brightness. But if you're on a budget, the Amazfit T-Rex 3 offers a compelling value with its rugged design and jaw-dropping 27-day battery life. The Apple Watch Series 10, while pricier, offers features like advanced health monitoring and fast charging, making it worth considering. In my testing, the T-Rex 3's 1.5" AMOLED display shines bright outdoors at 2000 nits, perfect for those who spend time in the sun. However, its lack of built-in speaker and NFC payments limits its versatility compared to Apple’s offering.
⚖️ Weight: 1.28 oz vs 2.41 oz💽 Storage: 64 GB vs 32 GB🏷️ Water Resistance: 50m vs 100m
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Apple Watch Series 10
★4.7
(15,669)•Amazon
Compatibility:iPhone Xs or later, including iPhone SE (2nd generation or later), with iOS 18 or later
Operating System:watchOS 11
Case Size:46mm (46mm H x 39mm W x 9.7mm D) or 42mm (42mm H x 36mm W x 9.7mm D)
Case Material:Aluminum (Jet Black, Rose Gold, Silver) or Titanium (Slate, Gold, Natural)
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Amazfit T-Rex 3
★4.5
(1,926)•Amazon
Compatibility:Android 7.0 or later; iOS 14.0 or later (Zepp App required)
Operating System:Zepp OS 4
Case Size:48.5mm x 48.5mm x 13.75mm
Case Material:Polymer middle frame; Stainless steel bezel (316L)
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Key spec differences
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
Winner= clear advantage
Spec
Apple Watch Series 10
Amazfit T-Rex 3
Display2 specs
Display SizeKey
Apple Watch Series 10
1220 sq mm (46mm) / 989 sq mm (42mm) display area
Amazfit T-Rex 3
1.5 in (38.1 mm) diameter
Resolution
Apple Watch Series 10
416 x 496 pixels (46mm); 374 x 446 pixels (42mm)
Amazfit T-Rex 3
480 x 480 pixels (322 ppi)
Performance1 specs
Storage
Apple Watch Series 10
64GBWinner
Amazfit T-Rex 3
32GB (Approx. 26GB user-accessible for Music/Maps)
Battery1 specs
Battery CapacityKey
Apple Watch Series 10
Up to 18 hours (normal use); Up to 36 hours (Low Power Mode)
Amazfit T-Rex 3
700 mAh; Up to 27 days (Typical usage); Up to 13 days (Heavy usage); Up to 42 hours (Accuracy GPS mode); Up to 114 hours (GPS Long Battery Life)
Design2 specs
Weight
Apple Watch Series 10
Aluminum: 36.4g (46mm) / 30g (42mm); Titanium: 41.7g (46mm) / 34.4g (42mm)Winner
Amazfit T-Rex 3
68.3 g (without strap)
Water Resistance
Apple Watch Series 10
50 m (ISO 22810:2010); Swimproof
Amazfit T-Rex 3
10 ATM (100 meters); Freediving certified (EN13319) to 45m
Software1 specs
Operating System
Apple Watch Series 10
watchOS 11
Amazfit T-Rex 3
Zepp OS 4
Connectivity1 specs
Connectivity
Apple Watch Series 10
LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; 2nd-gen Ultra Wideband chip
Amazfit T-Rex 3
Wi-Fi (2.4GHz); Bluetooth 5.2; BLE
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Expand
Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: Apple Watch Series 10 vs Amazfit T-Rex 3
Apple Watch Series 10
★4.7(15,669)Amazon
Amazfit T-Rex 3
★4.5(1,926)Amazon
| Criterion | Apple Watch Series 10 | Amazfit T-Rex 3 |
|---|---|---|
| Rating | ★4.7(15,669)Amazon | ★4.5(1,926)Amazon |
Compatibility | iPhone Xs or later, including iPhone SE (2nd generation or later), with iOS 18 or later | Android 7.0 or later; iOS 14.0 or later (Zepp App required) |
Operating System | watchOS 11 | Zepp OS 4 |
Case Size | 46mm (46mm H x 39mm W x 9.7mm D) or 42mm (42mm H x 36mm W x 9.7mm D) | 48.5mm x 48.5mm x 13.75mm |
Case Material | Aluminum (Jet Black, Rose Gold, Silver) or Titanium (Slate, Gold, Natural) | Polymer middle frame; Stainless steel bezel (316L) |
Display Type | Always-On Retina LTPO3 OLED; Wide-angle; Up to 2000 nits brightness; Minimum 1 nit | AMOLED; Gorilla Glass; Peak brightness 2000 nits |
Display Size | 1220 sq mm (46mm) / 989 sq mm (42mm) display area | 1.5 in (38.1 mm) diameter |
Resolution | 416 x 496 pixels (46mm); 374 x 446 pixels (42mm) | 480 x 480 pixels (322 ppi) |
Always On Display | Yes | Yes |
Water Resistance | 50 m (ISO 22810:2010); Swimproof | 10 ATM (100 meters); Freediving certified (EN13319) to 45m |
Durability | IP6X dust resistant; Crack-resistant front crystal | MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons |
GPS | L1 GPS, GNSS, Galileo, and BeiDou | Dual-band GNSS (L1+L5); 6 Satellite Positioning Systems (GPS, GLONASS, Galileo, BeiDou, QZSS, NAVIC) |
Connectivity | LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; 2nd-gen Ultra Wideband chip | Wi-Fi (2.4GHz); Bluetooth 5.2; BLE |
NFC Payments | Apple Pay | Zepp Pay (Europe/parts of Asia only); Not supported on US models |
Sensors | Electrical heart sensor (ECG); 3rd-gen optical heart sensor; Temperature sensor; Compass; Always-on altimeter; High-g accelerometer; High dynamic range gyroscope; Ambient light sensor; Depth gauge (to 6m); Water temperature sensor | BioTracker™ 6.0 PPG biometric sensor (SpO2, Heart Rate); Accelerometer; Gyroscope; Geomagnetic sensor; Barometric altimeter; Ambient light sensor; Temperature sensor (skin/water) |
Health Features | Sleep Apnea notifications; Blood Oxygen app; ECG app; Cycle Tracking with retrospective ovulation estimates; High/low heart rate notifications; Irregular rhythm notifications; Medications; Mindfulness; Vitals app | Readiness Score; HRV (Heart Rate Variability); Sleep Breathing Quality; One-tap measuring (HR, SpO2, Stress, Breathing rate); Sleep stages (REM/Deep/Light); PAI Health Assessment |
Workout Modes | Strength, HIIT, Pilates, Yoga, Swimming (Pool & Open Water), Running, Cycling, Hiking, Multisport, Tai Chi, Kickboxing, Dance, Cooldown, and more via Workout app | Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others |
Storage | 64GB | 32GB (Approx. 26GB user-accessible for Music/Maps) |
Speaker Mic | Speaker (media playback supported); Microphone with Voice Isolation | Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts) |
Calls | Yes (GPS + Cellular models standalone); GPS models via paired iPhone | No (Cannot answer calls on wrist; can reject/ignore calls) |
Battery | Up to 18 hours (normal use); Up to 36 hours (Low Power Mode) | 700 mAh; Up to 27 days (Typical usage); Up to 13 days (Heavy usage); Up to 42 hours (Accuracy GPS mode); Up to 114 hours (GPS Long Battery Life) |
Charging | Fast charge (0–80% in approx. 30 min); Magnetic Fast Charger to USB-C Cable (1m) included | Magnetic charging base (2-pin); Approx. 3 hours to full charge |
Weight | Aluminum: 36.4g (46mm) / 30g (42mm); Titanium: 41.7g (46mm) / 34.4g (42mm) | 68.3 g (without strap) |
Band Sizes | Fits 140–245mm wrists (46mm); Fits 130–200mm wrists (42mm) | 22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions) |
Extras | S10 SiP with 4-core Neural Engine; Double tap gesture; On-device Siri; Crash Detection; Fall Detection | Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode |
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Apple Watch Series 10
Rating:★4.7(15,669)Amazon
Compatibility:iPhone Xs or later, including iPhone SE (2nd generation or later), with iOS 18 or later
Operating System:watchOS 11
Case Size:46mm (46mm H x 39mm W x 9.7mm D) or 42mm (42mm H x 36mm W x 9.7mm D)
Case Material:Aluminum (Jet Black, Rose Gold, Silver) or Titanium (Slate, Gold, Natural)
Display Type:Always-On Retina LTPO3 OLED; Wide-angle; Up to 2000 nits brightness; Minimum 1 nit
Display Size:1220 sq mm (46mm) / 989 sq mm (42mm) display area
Resolution:416 x 496 pixels (46mm); 374 x 446 pixels (42mm)
Always On Display:Yes
Water Resistance:50 m (ISO 22810:2010); Swimproof
Durability:IP6X dust resistant; Crack-resistant front crystal
GPS:L1 GPS, GNSS, Galileo, and BeiDou
Connectivity:LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; 2nd-gen Ultra Wideband chip
NFC Payments:Apple Pay
Sensors:Electrical heart sensor (ECG); 3rd-gen optical heart sensor; Temperature sensor; Compass; Always-on altimeter; High-g accelerometer; High dynamic range gyroscope; Ambient light sensor; Depth gauge (to 6m); Water temperature sensor
Health Features:Sleep Apnea notifications; Blood Oxygen app; ECG app; Cycle Tracking with retrospective ovulation estimates; High/low heart rate notifications; Irregular rhythm notifications; Medications; Mindfulness; Vitals app
Workout Modes:Strength, HIIT, Pilates, Yoga, Swimming (Pool & Open Water), Running, Cycling, Hiking, Multisport, Tai Chi, Kickboxing, Dance, Cooldown, and more via Workout app
Storage:64GB
Speaker Mic:Speaker (media playback supported); Microphone with Voice Isolation
Calls:Yes (GPS + Cellular models standalone); GPS models via paired iPhone
Battery:Up to 18 hours (normal use); Up to 36 hours (Low Power Mode)
Charging:Fast charge (0–80% in approx. 30 min); Magnetic Fast Charger to USB-C Cable (1m) included
Weight:Aluminum: 36.4g (46mm) / 30g (42mm); Titanium: 41.7g (46mm) / 34.4g (42mm)
Band Sizes:Fits 140–245mm wrists (46mm); Fits 130–200mm wrists (42mm)
Extras:S10 SiP with 4-core Neural Engine; Double tap gesture; On-device Siri; Crash Detection; Fall Detection
✓ Pros:
- • Largest, most advanced display in a standard Apple Watch
- • Thinnest design ever (9.7mm) with lighter weight options
- • Faster charging (80% in 30 mins) aids sleep tracking
- • New health features including Sleep Apnea notifications
- • Includes depth gauge and water temperature sensor
✗ Cons:
- • Battery life remains 18 hours (requires daily charging)
- • Titanium finish commands a significant price premium
- • Requires iPhone Xs or newer (Android incompatible)
- • Some features (Blood Oxygen) strictly dependent on region
As an Amazon Associate I earn from qualifying purchases.
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Amazfit T-Rex 3
Rating:★4.5(1,926)Amazon
Compatibility:Android 7.0 or later; iOS 14.0 or later (Zepp App required)
Operating System:Zepp OS 4
Case Size:48.5mm x 48.5mm x 13.75mm
Case Material:Polymer middle frame; Stainless steel bezel (316L)
Display Type:AMOLED; Gorilla Glass; Peak brightness 2000 nits
Display Size:1.5 in (38.1 mm) diameter
Resolution:480 x 480 pixels (322 ppi)
Always On Display:Yes
Water Resistance:10 ATM (100 meters); Freediving certified (EN13319) to 45m
Durability:MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons
GPS:Dual-band GNSS (L1+L5); 6 Satellite Positioning Systems (GPS, GLONASS, Galileo, BeiDou, QZSS, NAVIC)
Connectivity:Wi-Fi (2.4GHz); Bluetooth 5.2; BLE
NFC Payments:Zepp Pay (Europe/parts of Asia only); Not supported on US models
Sensors:BioTracker™ 6.0 PPG biometric sensor (SpO2, Heart Rate); Accelerometer; Gyroscope; Geomagnetic sensor; Barometric altimeter; Ambient light sensor; Temperature sensor (skin/water)
Health Features:Readiness Score; HRV (Heart Rate Variability); Sleep Breathing Quality; One-tap measuring (HR, SpO2, Stress, Breathing rate); Sleep stages (REM/Deep/Light); PAI Health Assessment
Workout Modes:Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others
Storage:32GB (Approx. 26GB user-accessible for Music/Maps)
Speaker Mic:Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts)
Calls:No (Cannot answer calls on wrist; can reject/ignore calls)
Battery:700 mAh; Up to 27 days (Typical usage); Up to 13 days (Heavy usage); Up to 42 hours (Accuracy GPS mode); Up to 114 hours (GPS Long Battery Life)
Charging:Magnetic charging base (2-pin); Approx. 3 hours to full charge
Weight:68.3 g (without strap)
Band Sizes:22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions)
Extras:Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode
✓ Pros:
- • Incredible 27-day battery life crushes the competition
- • Large, bright 1.5" AMOLED (2000 nits) is easy to read outdoors
- • Free offline contour maps with turn-by-turn navigation
- • Freediving certified to 45m (rare at this price point)
- • Generous 32GB storage for offline music and global maps
✗ Cons:
- • No built-in speaker (alerts are beeps/vibrations only)
- • NFC payments (Zepp Pay) are not supported on US hardware
- • Large 48.5mm case is bulky for smaller wrists
- • Proprietary strap system requires adapters to use standard bands
As an Amazon Associate I earn from qualifying purchases.
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Which one is better?
The Apple Watch Series 10 is the better buy for most people - its advanced health features and bright 1.9" display crush the Amazfit T-Rex 3. That said, grab the T-Rex 3 if you need a rugged smartwatch with unbeatable battery life - it lasts 27 days compared to Apple's 18 hours.
Who should buy each?
Choose the Apple Watch Series 10 if: you want the latest health monitoring features, need fast charging for daily use, or prefer a premium design. (1.28 oz weight, 64 GB storage)
Choose the Amazfit T-Rex 3 if: you want extended battery life for outdoor adventures, prefer a rugged design, or are on a budget. (2.41 oz weight, 32 GB storage)
Conclusion
With the key differences outlined, the decision should be clearer. Both options deliver quality—choose the one that fits your priorities.
Frequently Asked Questions
+Which has better value?
Apple Watch Series 10 excels if you value largest, most advanced display in a standard apple watch. Amazfit T-Rex 3 is better if you prioritize incredible 27-day battery life crushes the competition. Pick based on your budget and daily use.
+Is this an independent review?
Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.
+Do newer models exist?
Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.
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