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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerAmazfit T-Rex 3 vs COROS VERTIX 2S
The Amazfit T-Rex 3 is the mid-range option here, but it shines with a remarkable 27-day battery life compared to the COROS VERTIX 2S's 40 days in daily use. This means less time charging and more time enjoying outdoor adventures in 2026. When you look at features, the Amazfit's 1.5" AMOLED display at 2000 nits provides vibrant visuals, making it great for outdoor use. In contrast, the COROS's 1.4" Transflective LCD isn’t as bright, so if readability in direct sunlight is crucial, the Amazfit is the way to go. The deciding factor? Battery life and screen quality in real-world use make the Amazfit T-Rex 3 a no-brainer for many users.
⚖️ Weight: 2.41 oz vs 3.07 oz🏷️ Battery: 27 days vs 40 days daily use🖥️ Display: 1.5" AMOLED (2000 nits) vs 1.4" Transflective LCD
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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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COROS VERTIX 2S
★4
(89)•Amazon
Compatibility:Android and iOS (via COROS app)
Operating System:COROS UI
Case Size:50.3mm (50.3 x 50.3 x 16.0 mm / 1.98 x 1.98 x 0.63 in)
Case Material:Bezel: Grade 5 Titanium Alloy with PVD coating; Body: Titanium Alloy with PVD coating; Glass: Sapphire crystal
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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
Amazfit T-Rex 3
COROS VERTIX 2S
Display2 specs
Display SizeKey
Amazfit T-Rex 3
1.5 in (38.1 mm) diameter
COROS VERTIX 2S
1.4 in
Resolution
Amazfit T-Rex 3
480 x 480 pixels (322 ppi)
COROS VERTIX 2S
280 x 280 pixels (64 colors)
Performance1 specs
Storage
Amazfit T-Rex 3
32GB (Approx. 26GB user-accessible for Music/Maps)
COROS VERTIX 2S
32 GB (Music storage and Maps)
Battery1 specs
Battery CapacityKey
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)
COROS VERTIX 2S
Up to 40 days (Daily Use); 118 hours (Standard Full GPS); 73 hours (All Systems On); 43 hours (Dual Frequency)
Design2 specs
Weight
Amazfit T-Rex 3
68.3 g (without strap)Winner
COROS VERTIX 2S
87 g (with Silicone band) / 70 g (with Nylon band) / 61 g (Body only)
Water Resistance
Amazfit T-Rex 3
10 ATM (100 meters); Freediving certified (EN13319) to 45m
COROS VERTIX 2S
10 ATM (100 m)
Software1 specs
Operating System
Amazfit T-Rex 3
Zepp OS 4
COROS VERTIX 2S
COROS UI
Connectivity1 specs
Connectivity
Amazfit T-Rex 3
Wi-Fi (2.4GHz); Bluetooth 5.2; BLE
COROS VERTIX 2S
Bluetooth, Wi-Fi (for data sync and firmware updates)
+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: Amazfit T-Rex 3 vs COROS VERTIX 2S
Amazfit T-Rex 3
★4.5(1,926)Amazon
COROS VERTIX 2S
★4(89)Amazon
| Criterion | Amazfit T-Rex 3 | COROS VERTIX 2S |
|---|---|---|
| Rating | ★4.5(1,926)Amazon | ★4(89)Amazon |
Compatibility | Android 7.0 or later; iOS 14.0 or later (Zepp App required) | Android and iOS (via COROS app) |
Operating System | Zepp OS 4 | COROS UI |
Case Size | 48.5mm x 48.5mm x 13.75mm | 50.3mm (50.3 x 50.3 x 16.0 mm / 1.98 x 1.98 x 0.63 in) |
Case Material | Polymer middle frame; Stainless steel bezel (316L) | Bezel: Grade 5 Titanium Alloy with PVD coating; Body: Titanium Alloy with PVD coating; Glass: Sapphire crystal |
Display Type | AMOLED; Gorilla Glass; Peak brightness 2000 nits | Transflective Memory-in-Pixel (LCD) touchscreen |
Display Size | 1.5 in (38.1 mm) diameter | 1.4 in |
Resolution | 480 x 480 pixels (322 ppi) | 280 x 280 pixels (64 colors) |
Always On Display | Yes | Yes (Memory LCD technology) |
Water Resistance | 10 ATM (100 meters); Freediving certified (EN13319) to 45m | 10 ATM (100 m) |
Durability | MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons | Operating temp: -22°F to 122°F (-30°C to 50°C); scratch-resistant sapphire; titanium chassis |
GPS | Dual-band GNSS (L1+L5); 6 Satellite Positioning Systems (GPS, GLONASS, Galileo, BeiDou, QZSS, NAVIC) | Dual-Frequency GNSS (L1 + L5); GPS, GLONASS, Galileo, Beidou, QZSS |
Connectivity | Wi-Fi (2.4GHz); Bluetooth 5.2; BLE | Bluetooth, Wi-Fi (for data sync and firmware updates) |
NFC Payments | Zepp Pay (Europe/parts of Asia only); Not supported on US models | No (Not supported) |
Sensors | BioTracker™ 6.0 PPG biometric sensor (SpO2, Heart Rate); Accelerometer; Gyroscope; Geomagnetic sensor; Barometric altimeter; Ambient light sensor; Temperature sensor (skin/water) | Next-Gen Optical Heart Rate; Barometric Altimeter; Accelerometer; Gyroscope; 3D Compass; Thermometer; Optical Pulse Oximeter; ECG Sensor |
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 | HRV Index; Sleep tracking (REM/Deep/Light); SpO2 (Altitude mode); Daily Stress; Recovery time; Resting Heart Rate |
Workout Modes | Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others | Multi-pitch climbing, Trail Running, Hiking, Skiing (XC/Touring/Downhill), Surfing (Speed/Wind), Whitewater, Triathlon, Strength |
Storage | 32GB (Approx. 26GB user-accessible for Music/Maps) | 32 GB (Music storage and Maps) |
Speaker Mic | Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts) | No (Beep alerts and vibration only) |
Calls | No (Cannot answer calls on wrist; can reject/ignore calls) | No (Notification alerts only) |
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) | Up to 40 days (Daily Use); 118 hours (Standard Full GPS); 73 hours (All Systems On); 43 hours (Dual Frequency) |
Charging | Magnetic charging base (2-pin); Approx. 3 hours to full charge | COROS proprietary charging cable (USB-A) |
Weight | 68.3 g (without strap) | 87 g (with Silicone band) / 70 g (with Nylon band) / 61 g (Body only) |
Band Sizes | 22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions) | Silicone: 130–240 mm; Nylon: 155–225 mm; 26 mm Quick Fit width |
Extras | Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode | Global offline landscape/topo maps; Music playback (MP3 via Bluetooth); GoPro/Insta360 camera control; Digital Dial navigation; Storm alerts |
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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.
Check Price on Amazon→
COROS VERTIX 2S
Rating:★4(89)Amazon
Compatibility:Android and iOS (via COROS app)
Operating System:COROS UI
Case Size:50.3mm (50.3 x 50.3 x 16.0 mm / 1.98 x 1.98 x 0.63 in)
Case Material:Bezel: Grade 5 Titanium Alloy with PVD coating; Body: Titanium Alloy with PVD coating; Glass: Sapphire crystal
Display Type:Transflective Memory-in-Pixel (LCD) touchscreen
Display Size:1.4 in
Resolution:280 x 280 pixels (64 colors)
Always On Display:Yes (Memory LCD technology)
Water Resistance:10 ATM (100 m)
Durability:Operating temp: -22°F to 122°F (-30°C to 50°C); scratch-resistant sapphire; titanium chassis
GPS:Dual-Frequency GNSS (L1 + L5); GPS, GLONASS, Galileo, Beidou, QZSS
Connectivity:Bluetooth, Wi-Fi (for data sync and firmware updates)
NFC Payments:No (Not supported)
Sensors:Next-Gen Optical Heart Rate; Barometric Altimeter; Accelerometer; Gyroscope; 3D Compass; Thermometer; Optical Pulse Oximeter; ECG Sensor
Health Features:HRV Index; Sleep tracking (REM/Deep/Light); SpO2 (Altitude mode); Daily Stress; Recovery time; Resting Heart Rate
Workout Modes:Multi-pitch climbing, Trail Running, Hiking, Skiing (XC/Touring/Downhill), Surfing (Speed/Wind), Whitewater, Triathlon, Strength
Storage:32 GB (Music storage and Maps)
Speaker Mic:No (Beep alerts and vibration only)
Calls:No (Notification alerts only)
Battery:Up to 40 days (Daily Use); 118 hours (Standard Full GPS); 73 hours (All Systems On); 43 hours (Dual Frequency)
Charging:COROS proprietary charging cable (USB-A)
Weight:87 g (with Silicone band) / 70 g (with Nylon band) / 61 g (Body only)
Band Sizes:Silicone: 130–240 mm; Nylon: 155–225 mm; 26 mm Quick Fit width
Extras:Global offline landscape/topo maps; Music playback (MP3 via Bluetooth); GoPro/Insta360 camera control; Digital Dial navigation; Storm alerts
✓ Pros:
- • Class-leading battery life (118 hours standard GPS, 40 days daily use)
- • Updated next-gen heart rate sensor for improved accuracy over Vertix 2
- • Dual-frequency GNSS provides rock-solid tracking in steep terrain
- • Bombproof build quality with full titanium body and sapphire glass
- • 32GB storage for offline global maps and music without phone dependency
✗ Cons:
- • No NFC payments or streaming music support (Spotify/Apple Music)
- • Large 50.3mm case is very bulky for smaller wrists
- • Screen is less vibrant and lower resolution than AMOLED competitors
- • No built-in speaker or microphone for voice notes or calls
As an Amazon Associate I earn from qualifying purchases.
Check Price on Amazon→
Which one is better?
The Amazfit T-Rex 3 is the better buy for most people - its 27-day battery life crushes the COROS VERTIX 2S's 40 days daily use. That said, grab the COROS if you need rock-solid GPS accuracy for extreme conditions - it's only marginally heavier at 3.07 oz.
Who should buy each?
Choose the Amazfit T-Rex 3 if: you want incredible battery life for multi-day adventures, enjoy vibrant outdoor displays, or prefer a lighter watch. (2.41 oz weight)
Choose the COROS VERTIX 2S if: you need advanced GPS tracking for steep terrains, appreciate titanium durability, or plan to use it for extended GPS activities. (3.07 oz weight)
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Frequently Asked Questions
+Which has better value?
Amazfit T-Rex 3 excels if you value incredible 27-day battery life crushes the competition. COROS VERTIX 2S is better if you prioritize class-leading battery life (118 hours standard gps, 40 days daily use). 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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