Both are rugged 10 ATM outdoor watches with AMOLED and around 25 days of battery life.
Short answer
Amazfit T-Rex 3 Pro 48 mm - bigger screen, titanium, dual-frequency GNSS, SpO2, Wi-Fi, cheaper. Garmin Instinct 3 AMOLED 50 mm - NFC for payments and Garmin Connect.
Key differences
| Spec | Amazfit T-Rex 3 Pro 48mm | Garmin Instinct 3 50mm AMOLED |
|---|---|---|
| Display | 1.5", AMOLED, 480×480 | 1.3", AMOLED, 416×416 |
| Memory | — | 4 GB |
| Battery life | up to 25 days | up to 24 days |
| Battery | 700 mAh | — |
| Connectivity | Bluetooth, Wi-Fi 2.4 GHz | Bluetooth, ANT+ |
| Navigation | GNSS (L1 + L5) | GPS, GLONASS, Galileo, QZSS, BeiDou |
| NFC | — | yes |
| Sensors | heart rate, SpO2, barometer, compass, gyroscope, temperature | heart rate, barometer, compass, gyroscope, temperature |
| Protection | 10 ATM | 10 ATM |
| OS | Zepp OS | — |
| Compatibility | Android 7.0+, iOS 15.0+ | iPhone, Android |
| Dimensions, weight | 48×48×14 mm, 52 g | 50×50×14.4 mm, 59 g |
| Price | current prices | current prices |
Specs come from the device pages on Smartphone.ua.
Display
1.5" 480×480 vs 1.3" 416×416.
Battery life
Up to 25 vs up to 24 days - a tie.
Case
Titanium and 52 g vs polymer with aluminium and 59 g.
Verdict: who should buy which
- More hardware for less - Amazfit T-Rex 3 Pro.
- Payments and ecosystem - Garmin Instinct 3 AMOLED.
FAQ
Is the protection the same?
Yes, 10 ATM.
Do they work with an iPhone?
Yes, both.
Which is cheaper?
The T-Rex 3 Pro.