Polar M400 vs. Fitbit One vs. Polar M430 vs. Polar A370 vs. HTC re Grip
Basic Info |
| Suggested Price | $200 | $100 | $255 | $179.95 | $199 |
| Release | 2014 | 2012 | 2017 | 2017 | 2020 |
Activity & Fitness |
| Calories | | | | | |
| Cycling (Bicycling) | | | | | |
| Distance | | | | | |
| Heart | n/a | | | | |
| Oxygen | | | | | |
| Sleep | | | | | |
| Steps | | | | | |
| Swim | | | | | |
Battery |
| Duration | 8 hours to 30 days | 10-14 days | 30 hours | Up to 3 days | 5 hours to 2.5 days |
| Rechargeable | | | | | |
Compatibility |
| Android | | | | | |
| iOS | | | | | |
| Windows Phone | n/a | n/a | | | NA |
| Mac | | | | | NA |
| Windows | | | | | NA |
Connectivity |
| Bluetooth | | | | | |
| Cellular | | | | | |
| GPS | | | | | |
| NFC | | | | | |
| Wi-Fi | | | | | |
Display |
| Color | | | | | |
| Resolution | n/a | n/a | 128x128 | 160 x 80 | 160 x 32 |
| Size | n/a | n/a | 1.4 inch | 1.18 inches | 1.8 inches |
| Touch | | | | | |
| Type | n/a | OLED | LCD | TFT LCD | PMOLED |
Functions |
| Audio Speaker | Alerts only | | | | |
| Clock | | | | | |
| Phone | | | | | |
| Vibration | | | | | |
| Voice | | | | | |
Hardware |
| Accelerometer | | | | | |
| Barometer or Altimeter | | | | | |
| Ultraviolet Sensor | | | | | |
| Water Resistance | 3 ATM | Splast Resistant | WR30 | WR30 | IP57 |
Notifications |
| Phone | | | | | |
| Emails | | | | | |
| Texts | | | | | |
Software |
| Operating System | n/a | n/a | | | NA |
| Apps | | | | | |
| Music | | | | | |
