Polar A370 vs. Fitbit Inspire HR vs. Amazfit T-Rex
 | | | |
| PolarA370Remove Buy Now | FitbitInspire HRRemove Buy Now | AmazfitT-RexRemove Buy Now |
Basic Info | |||
| Suggested Price | $179.95 | $99 | $140 |
| Release | 2017 | 2019 | 2019 |
Activity & Fitness | |||
| Calories | |||
| Cycling (Bicycling) | |||
| Distance | |||
| Heart | |||
| Oxygen | |||
| Sleep | |||
| Steps | |||
| Swim | |||
Battery | |||
| Duration | Up to 3 days | 5 days | 20 days |
| Rechargeable | |||
Compatibility | |||
| Android | |||
| iOS | |||
| Windows Phone | |||
| Mac | |||
| Windows | |||
Connectivity | |||
| Bluetooth | |||
| Cellular | |||
| GPS | |||
| NFC | |||
| Wi-Fi | |||
Display | |||
| Color | |||
| Resolution | 160 x 80 | 139 x 60 | 360 x 360 |
| Size | 1.18 inches | 1.4 inches | 1.3 inches |
| Touch | |||
| Type | TFT LCD | OLED | AMOLED |
Functions | |||
| Audio Speaker | |||
| Clock | |||
| Phone | |||
| Vibration | |||
| Voice | |||
Hardware | |||
| Accelerometer | |||
| Barometer or Altimeter | |||
| Ultraviolet Sensor | |||
| Water Resistance | WR30 | 5 ATM | 5 ATM |
Notifications | |||
| Phone | |||
| Emails | |||
| Texts | |||
Software | |||
| Operating System | Fitbit OS | Build-in | |
| Apps | |||
| Music | |||