| Specification | Fitbit Versa 3 | Amazfit T-Rex 2 |
|---|---|---|
| Features | ||
| Water Resistant | ||
| Bluetooth | ||
| Speaker | ||
| Others | 24/7 Heart Rate, Alexa Built-in, 6+ Days Battery, Black/Black, One Size (S & L Bands Included) | Rugged Outdoor GPS Sports Fitness Watch, 15 Military-Grade Tests, Real-time Navigation, 24-day Battery Life, Strength Exercise, 150+ Sports Modes |
| Sensors | Altimeter | BioTracker 3.0 PPG biometric sensor, Acceleration sensor, Gyroscope sensor, Geomagnetic sensor, Barometric altimeter, Ambient light sensor |
| Voice Control | ||
| App Control | ||
| Physical | ||
| Lenth (inch) | 1.5 | 1.8 |
| Height (inch) | 0.4 | 0.5 |
| Width (inch) | 1.5 | 1.8 |
| General | ||
| Screen Size (mm) | 40 | 35.3 |
| Display Type | AMOLED | |
| Frame | Silicone | Polymer Alloy |
| Color/finish | Black | Black |