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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerGarmin Enduro 3 vs Amazfit T-Rex 3
The Garmin Enduro 3 is the flagship option with jaw-dropping battery life, offering an incredible 90 days in smartwatch mode with solar charging. Meanwhile, the Amazfit T-Rex 3 provides a solid mid-range choice with a respectable 27 days of battery life. What's the key difference? It's all about endurance versus features. In real-world usage, the Enduro 3's 36-day battery in typical settings means you can go weeks without worrying about a charge, making it ideal for long adventures. On the flip side, the T-Rex 3’s bright 1.5" AMOLED display at 2000 nits excels in outdoor visibility, but its battery can't compete with the Enduro 3's stamina. So, which one should you choose?
⚖️ Weight: 2.22 oz vs 2.41 oz📱 Display: 1.4" MIP vs 1.5" AMOLED🔋 Battery: 90 days vs 27 days
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Garmin Enduro 3
★4
(7)•Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:51mm x 51mm x 15.7mm
Case Material:Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens
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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
Garmin Enduro 3
Amazfit T-Rex 3
Display2 specs
Display SizeKey
Garmin Enduro 3
1.4 in (35.56 mm) diameter
Amazfit T-Rex 3
1.5 in (38.1 mm) diameter
Resolution
Garmin Enduro 3
280 x 280 pixels
Amazfit T-Rex 3
480 x 480 pixels (322 ppi)
Performance1 specs
Storage
Garmin Enduro 3
32GB
Amazfit T-Rex 3
32GB (Approx. 26GB user-accessible for Music/Maps)
Battery1 specs
Battery CapacityKey
Garmin Enduro 3
Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar
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
Garmin Enduro 3
63 g (Case only: 57 g) — includes UltraFit nylon strapWinner
Amazfit T-Rex 3
68.3 g (without strap)
Water Resistance
Garmin Enduro 3
10 ATM (water pressure equivalent to 100 meters)
Amazfit T-Rex 3
10 ATM (100 meters); Freediving certified (EN13319) to 45m
Software1 specs
Operating System
Garmin Enduro 3
Garmin OS (Proprietary)
Amazfit T-Rex 3
Zepp OS 4
Connectivity1 specs
Connectivity
Garmin Enduro 3
Bluetooth; ANT+; Wi-Fi
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.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: Garmin Enduro 3 vs Amazfit T-Rex 3
Garmin Enduro 3
★4(7)Amazon
Amazfit T-Rex 3
★4.5(1,926)Amazon
| Criterion | Garmin Enduro 3 | Amazfit T-Rex 3 |
|---|---|---|
| Rating | ★4(7)Amazon | ★4.5(1,926)Amazon |
Compatibility | iPhone, Android (Garmin Connect app required) | Android 7.0 or later; iOS 14.0 or later (Zepp App required) |
Operating System | Garmin OS (Proprietary) | Zepp OS 4 |
Case Size | 51mm x 51mm x 15.7mm | 48.5mm x 48.5mm x 13.75mm |
Case Material | Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens | Polymer middle frame; Stainless steel bezel (316L) |
Display Type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED; Gorilla Glass; Peak brightness 2000 nits |
Display Size | 1.4 in (35.56 mm) diameter | 1.5 in (38.1 mm) diameter |
Resolution | 280 x 280 pixels | 480 x 480 pixels (322 ppi) |
Always On Display | Yes (MIP display is always visible) | Yes |
Water Resistance | 10 ATM (water pressure equivalent to 100 meters) | 10 ATM (100 meters); Freediving certified (EN13319) to 45m |
Durability | MIL-STD-810H (Thermal, Shock, Water); Scratch-resistant Sapphire lens | MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons |
GPS | Multi-band GNSS with SatIQ technology; GPS, GLONASS, Galileo, QZSS, BeiDou | Dual-band GNSS (L1+L5); 6 Satellite Positioning Systems (GPS, GLONASS, Galileo, BeiDou, QZSS, NAVIC) |
Connectivity | Bluetooth; ANT+; Wi-Fi | Wi-Fi (2.4GHz); Bluetooth 5.2; BLE |
NFC Payments | Garmin Pay | Zepp Pay (Europe/parts of Asia only); Not supported on US models |
Sensors | Elevate Gen 5 optical heart rate sensor (ECG capable); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer | BioTracker™ 6.0 PPG biometric sensor (SpO2, Heart Rate); Accelerometer; Gyroscope; Geomagnetic sensor; Barometric altimeter; Ambient light sensor; Temperature sensor (skin/water) |
Health Features | Garmin ECG App (region dependent); Body Battery; Sleep Score and advanced monitoring; HRV Status; Pulse Ox; Nap detection; Jet Lag Adviser; Health Snapshot | 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 | Ultrarunning (with rest timer); Adventure Racing; Trail Run; Advanced Strength Training; Hiking; Cycling (MTB, Gravel, Road); Swimming (Pool & Open Water); Skiing; Surfing; and 100+ others | Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others |
Storage | 32GB | 32GB (Approx. 26GB user-accessible for Music/Maps) |
Speaker Mic | None (Audio prompts via connected Bluetooth headphones only) | Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts) |
Calls | No (Can accept/decline calls to control phone; Android users can send text replies) | No (Cannot answer calls on wrist; can reject/ignore calls) |
Battery | Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar | 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 | Garmin proprietary plug charger (USB-C cable included); Solar charging | Magnetic charging base (2-pin); Approx. 3 hours to full charge |
Weight | 63 g (Case only: 57 g) — includes UltraFit nylon strap | 68.3 g (without strap) |
Band Sizes | Fits wrists 127–225mm (UltraFit nylon strap included); QuickFit 26mm compatible | 22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions) |
Extras | Built-in LED Flashlight (Red/White strobes); Dynamic Round-Trip Routing; TopoActive Maps (preloaded); NextFork Map Guide; Grade Adjusted Pace; Real-time Stamina | Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode |
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Garmin Enduro 3
Rating:★4(7)Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:51mm x 51mm x 15.7mm
Case Material:Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens
Display Type:Sunlight-visible, transflective memory-in-pixel (MIP)
Display Size:1.4 in (35.56 mm) diameter
Resolution:280 x 280 pixels
Always On Display:Yes (MIP display is always visible)
Water Resistance:10 ATM (water pressure equivalent to 100 meters)
Durability:MIL-STD-810H (Thermal, Shock, Water); Scratch-resistant Sapphire lens
GPS:Multi-band GNSS with SatIQ technology; GPS, GLONASS, Galileo, QZSS, BeiDou
Connectivity:Bluetooth; ANT+; Wi-Fi
NFC Payments:Garmin Pay
Sensors:Elevate Gen 5 optical heart rate sensor (ECG capable); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer
Health Features:Garmin ECG App (region dependent); Body Battery; Sleep Score and advanced monitoring; HRV Status; Pulse Ox; Nap detection; Jet Lag Adviser; Health Snapshot
Workout Modes:Ultrarunning (with rest timer); Adventure Racing; Trail Run; Advanced Strength Training; Hiking; Cycling (MTB, Gravel, Road); Swimming (Pool & Open Water); Skiing; Surfing; and 100+ others
Storage:32GB
Speaker Mic:None (Audio prompts via connected Bluetooth headphones only)
Calls:No (Can accept/decline calls to control phone; Android users can send text replies)
Battery:Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar
Charging:Garmin proprietary plug charger (USB-C cable included); Solar charging
Weight:63 g (Case only: 57 g) — includes UltraFit nylon strap
Band Sizes:Fits wrists 127–225mm (UltraFit nylon strap included); QuickFit 26mm compatible
Extras:Built-in LED Flashlight (Red/White strobes); Dynamic Round-Trip Routing; TopoActive Maps (preloaded); NextFork Map Guide; Grade Adjusted Pace; Real-time Stamina
✓ Pros:
- • Unrivaled battery life: up to 90 days in smartwatch mode with solar
- • Incredibly lightweight (63g) for a 51mm watch due to nylon strap/titanium
- • Built-in LED flashlight is a game-changer for ultra-endurance events
- • Excellent visibility in direct sunlight thanks to MIP display
- • Preloaded TopoActive maps with SatIQ for superior navigation
✗ Cons:
- • Lacks the speaker/microphone found in the Fenix 8 series
- • No diving certification (unlike Fenix 8 which is rated to 40m)
- • MIP display is less vibrant indoors compared to AMOLED rivals
- • Large 51mm case size may be too bulky for smaller wrists
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 Garmin Enduro 3 is the better buy for most people - its astounding 90-day battery life crushes the Amazfit T-Rex 3. That said, grab the T-Rex 3 if you need a vibrant display for outdoor activities - it weighs 2.41 oz, making it easier to wear during daily tasks.
Who should buy each?
Choose the Garmin Enduro 3 if: you need months of battery life for long adventures, you prioritize lightweight design at 2.22 oz, or you want robust mapping features.
Choose the Amazfit T-Rex 3 if: you want a bright AMOLED display for outdoor readability, you prefer a more budget-friendly option, or you value freediving certification to 45m.
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?
Garmin Enduro 3 excels if you value unrivaled battery life: up to 90 days in smartwatch mode with solar. 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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