Two outdoor AMOLED watches rated 10 ATM with about 17-18 days of battery life.
Short answer
Garmin Instinct 3 AMOLED - NFC, 4 GB, Garmin Connect. Amazfit T-Rex 3 Pro 44mm - titanium, dual-frequency GNSS, Wi-Fi, lighter and cheaper.
Key differences
| Spec | Garmin Instinct 3 45mm AMOLED | Amazfit T-Rex 3 Pro 44mm |
|---|---|---|
| Display | 1.2", AMOLED, 390×390 | 1.32", AMOLED, 466×466 |
| Memory | 4 GB | — |
| Battery life | up to 18 days | up to 17 days |
| Battery | — | 500 mAh |
| Connectivity | Bluetooth, ANT+ | Bluetooth, Wi-Fi 2.4 GHz |
| Navigation | GPS, GLONASS, Galileo, QZSS, BeiDou | GNSS (L1 + L5) |
| NFC | yes | — |
| Sensors | heart rate, barometer, compass, gyroscope, temperature | heart rate, SpO2, barometer, compass, gyroscope, temperature |
| Protection | 10 ATM | 10 ATM |
| OS | — | Zepp OS |
| Compatibility | iPhone, Android | Android 7.0+, iOS 15.0+ |
| Dimensions, weight | 45×45×14.9 mm, 53 g | 44.8×44.8×13.2 mm, 46.8 g |
| Price | current prices | current prices |
Specs come from the device pages on Smartphone.ua.
Display
1.2" 390×390 vs 1.32" 466×466.
Navigation
GPS with BeiDou and QZSS vs L1 + L5.
Case
Polymer with aluminium and 53 g vs titanium and 46.8 g.
Verdict: who should buy which
- Payments and ecosystem - Garmin Instinct 3 AMOLED.
- Titanium and price - Amazfit T-Rex 3 Pro.
FAQ
Is the protection the same?
Yes, 10 ATM.
What is the battery life?
Up to 18 and up to 17 days.
Which is cheaper?
The T-Rex 3 Pro.