Polar M400 vs. Amazfit Stratos
Basic Info |
| Suggested Price | $200 | $199 |
| Release | 2014 | 2018 |
Activity & Fitness |
| Calories | | |
| Cycling (Bicycling) | | |
| Distance | | |
| Heart | n/a | |
| Oxygen | | |
| Sleep | | |
| Steps | | |
| Swim | | |
Battery |
| Duration | 8 hours to 30 days | 5 days |
| Rechargeable | | |
Compatibility |
| Android | | |
| iOS | | |
| Windows Phone | n/a | |
| Mac | | |
| Windows | | |
Connectivity |
| Bluetooth | | |
| Cellular | | |
| GPS | | |
| NFC | | |
| Wi-Fi | | |
Display |
| Color | | |
| Resolution | n/a | 320 x 300 |
| Size | n/a | 1.34 inches |
| Touch | | |
| Type | n/a | OLED |
Functions |
| Audio Speaker | Alerts only | |
| Clock | | |
| Phone | | |
| Vibration | | |
| Voice | | |
Hardware |
| Accelerometer | | |
| Barometer or Altimeter | | |
| Ultraviolet Sensor | | |
| Water Resistance | 3 ATM | 5 ATM |
Notifications |
| Phone | | |
| Emails | | |
| Texts | | |
Software |
| Operating System | n/a | Proprietary |
| Apps | | |
| Music | | |
