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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerGarmin Venu 3 vs Amazfit T-Rex 3
If you're weighing the Garmin Venu 3 and the Amazfit T-Rex 3, the Venu 3 comes out ahead for most users, thanks to its bright 1.4" AMOLED display. However, the T-Rex 3 shines with its staggering 27-day battery life, making it a tempting choice for outdoor enthusiasts. In real-world use, the Garmin Venu 3's 14-day battery is impressive, but the T-Rex 3's 27 days means you can go weeks without a charge. And while the Venu 3 offers a built-in speaker for calls, the T-Rex 3's 32GB storage is a big plus for those wanting offline music or maps on the go.
⚖️ Weight: 1.66 oz vs 2.41 oz💽 Storage: 8 GB vs 32 GB🔋 Battery: 14 days vs 27 days
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Garmin Venu 3
★4.5
(5,399)•Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:45mm x 45mm x 12mm
Case Material:Fiber-reinforced polymer case; Stainless steel bezel; Corning Gorilla Glass 3
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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 Venu 3
Amazfit T-Rex 3
Display2 specs
Display SizeKey
Garmin Venu 3
1.4 in (35.4 mm) diameter
Amazfit T-Rex 3
1.5 in (38.1 mm) diameter
Resolution
Garmin Venu 3
454 x 454 pixels
Amazfit T-Rex 3
480 x 480 pixels (322 ppi)
Performance1 specs
Storage
Garmin Venu 3
8GB
Amazfit T-Rex 3
32GB (Approx. 26GB user-accessible for Music/Maps)Winner
Battery1 specs
Battery CapacityKey
Garmin Venu 3
Smartwatch mode: Up to 14 days (5 days always-on); Battery Saver: Up to 26 days; GPS-Only GNSS: Up to 26 hours; All-Systems GNSS: Up to 20 hours
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 Venu 3
47 g (with included band); 30 g (case only)Winner
Amazfit T-Rex 3
68.3 g (without strap)
Water Resistance
Garmin Venu 3
5 ATM (water pressure equivalent to 50 meters); Swimproof
Amazfit T-Rex 3
10 ATM (100 meters); Freediving certified (EN13319) to 45m
Software1 specs
Operating System
Garmin Venu 3
Garmin OS (Proprietary)
Amazfit T-Rex 3
Zepp OS 4
Connectivity1 specs
Connectivity
Garmin Venu 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 Venu 3 vs Amazfit T-Rex 3
Garmin Venu 3
★4.5(5,399)Amazon
Amazfit T-Rex 3
★4.5(1,926)Amazon
| Criterion | Garmin Venu 3 | Amazfit T-Rex 3 |
|---|---|---|
| Rating | ★4.5(5,399)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 | 45mm x 45mm x 12mm | 48.5mm x 48.5mm x 13.75mm |
Case Material | Fiber-reinforced polymer case; Stainless steel bezel; Corning Gorilla Glass 3 | Polymer middle frame; Stainless steel bezel (316L) |
Display Type | AMOLED; Always-On Mode available | AMOLED; Gorilla Glass; Peak brightness 2000 nits |
Display Size | 1.4 in (35.4 mm) diameter | 1.5 in (38.1 mm) diameter |
Resolution | 454 x 454 pixels | 480 x 480 pixels (322 ppi) |
Always On Display | Yes (optional) | Yes |
Water Resistance | 5 ATM (water pressure equivalent to 50 meters); Swimproof | 10 ATM (100 meters); Freediving certified (EN13319) to 45m |
Durability | Corning Gorilla Glass 3 lens; Stainless steel bezel | MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons |
GPS | GPS; GLONASS; Galileo (Single-band GNSS) | 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 hardware); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer; Ambient light 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 Coach; Nap Detection; ECG App (FDA cleared); HRV Status; Body Battery; Jet Lag Adviser; Health Snapshot; Women’s Health; Meditation | 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 | Wheelchair Mode (pushes, weight shifts); Strength; HIIT; Yoga; Pilates; Running; Cycling; Swimming (Pool); Golf; Tennis; Pickleball; and 30+ others | Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others |
Storage | 8GB | 32GB (Approx. 26GB user-accessible for Music/Maps) |
Speaker Mic | Built-in Speaker; Built-in Microphone (Voice Assistant & Calls) | Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts) |
Calls | Yes (Make and take calls via Bluetooth connection to smartphone) | No (Cannot answer calls on wrist; can reject/ignore calls) |
Battery | Smartwatch mode: Up to 14 days (5 days always-on); Battery Saver: Up to 26 days; GPS-Only GNSS: Up to 26 hours; All-Systems GNSS: Up to 20 hours | 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) | Magnetic charging base (2-pin); Approx. 3 hours to full charge |
Weight | 47 g (with included band); 30 g (case only) | 68.3 g (without strap) |
Band Sizes | Fits wrists 135–200 mm (Silicone band included); Compatible with standard 22mm Quick Release bands | 22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions) |
Extras | Voice Assistant support (Siri, Google Assistant, Bixby via phone); Wheelchair mode specialized metrics; On-screen muscle maps; Photos in notifications (Android only) | Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode |
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Garmin Venu 3
Rating:★4.5(5,399)Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:45mm x 45mm x 12mm
Case Material:Fiber-reinforced polymer case; Stainless steel bezel; Corning Gorilla Glass 3
Display Type:AMOLED; Always-On Mode available
Display Size:1.4 in (35.4 mm) diameter
Resolution:454 x 454 pixels
Always On Display:Yes (optional)
Water Resistance:5 ATM (water pressure equivalent to 50 meters); Swimproof
Durability:Corning Gorilla Glass 3 lens; Stainless steel bezel
GPS:GPS; GLONASS; Galileo (Single-band GNSS)
Connectivity:Bluetooth; ANT+; Wi-Fi
NFC Payments:Garmin Pay
Sensors:Elevate Gen 5 optical heart rate sensor (ECG hardware); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer; Ambient light sensor
Health Features:Sleep Coach; Nap Detection; ECG App (FDA cleared); HRV Status; Body Battery; Jet Lag Adviser; Health Snapshot; Women’s Health; Meditation
Workout Modes:Wheelchair Mode (pushes, weight shifts); Strength; HIIT; Yoga; Pilates; Running; Cycling; Swimming (Pool); Golf; Tennis; Pickleball; and 30+ others
Storage:8GB
Speaker Mic:Built-in Speaker; Built-in Microphone (Voice Assistant & Calls)
Calls:Yes (Make and take calls via Bluetooth connection to smartphone)
Battery:Smartwatch mode: Up to 14 days (5 days always-on); Battery Saver: Up to 26 days; GPS-Only GNSS: Up to 26 hours; All-Systems GNSS: Up to 20 hours
Charging:Garmin proprietary plug charger (USB-C cable included)
Weight:47 g (with included band); 30 g (case only)
Band Sizes:Fits wrists 135–200 mm (Silicone band included); Compatible with standard 22mm Quick Release bands
Extras:Voice Assistant support (Siri, Google Assistant, Bixby via phone); Wheelchair mode specialized metrics; On-screen muscle maps; Photos in notifications (Android only)
✓ Pros:
- • Bright 1.4" AMOLED display with refined, lifestyle-friendly UI
- • Built-in speaker and microphone for wrist calls and voice assistants
- • Latest Elevate Gen 5 sensor supports FDA-cleared ECG app
- • Dedicated Wheelchair Mode tracks pushes rather than steps
- • Excellent 14-day battery life significantly outperforms Apple/Samsung
✗ Cons:
- • Lacks Multi-Band GPS (found in similarly priced Forerunner 265)
- • Plastic case body feels less premium than metal-bodied competitors
- • No LTE option available (phone required for calls/safety)
- • Gorilla Glass 3 is older tech compared to Sapphire or newer Gorilla Glass
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Check Price on Amazon→
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 Venu 3 is the better buy for most people - its 1.4" AMOLED display crushes the Amazfit T-Rex 3's visibility in low light. That said, grab the T-Rex 3 if you need exceptional battery life - it's 13 days longer than the Venu 3.
Who should buy each?
Choose the Garmin Venu 3 if: you want a vibrant display for workouts, need to make calls from your wrist, or prefer a sleek design. (1.66 oz weight, 8 GB storage)
Choose the Amazfit T-Rex 3 if: you want a rugged smartwatch for outdoor adventures, need 2+ weeks of battery life, or love listening to music offline.
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 Venu 3 excels if you value bright 1.4" amoled display with refined, lifestyle-friendly ui. 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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