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| AppleWatchRemove Buy Now | PolarLoop 2Remove Buy Now | PolarM400Remove Buy Now |
Basic Info | |||
| Suggested Price | $349 | $120 | $200 |
| Release | 2015 | 2015 | 2014 |
Activity & Fitness | |||
| Calories | |||
| Cycling (Bicycling) | |||
| Distance | |||
| Heart | n/a | n/a | |
| Oxygen | |||
| Sleep | |||
| Steps | |||
| Swim | |||
Battery | |||
| Duration | 18 hours | 8 days (without notifications) | 8 hours to 30 days |
| Rechargeable | |||
Compatibility | |||
| Android | |||
| iOS | |||
| Windows Phone | NA | n/a | n/a |
| Mac | NA | n/a | |
| Windows | NA | n/a | |
Connectivity | |||
| Bluetooth | |||
| Cellular | |||
| GPS | |||
| NFC | |||
| Wi-Fi | |||
Display | |||
| Color | |||
| Resolution | 340 x 272 or 390 x 312 | n/a | n/a |
| Size | 1.5 inches or 1.65 inches | n/a | n/a |
| Touch | |||
| Type | AMOLED | LED | n/a |
Functions | |||
| Audio Speaker | Alerts only | ||
| Clock | |||
| Phone | |||
| Vibration | |||
| Voice | |||
Hardware | |||
| Accelerometer | |||
| Barometer or Altimeter | |||
| Ultraviolet Sensor | |||
| Water Resistance | IPX7 | 2 ATM | 3 ATM |
Notifications | |||
| Phone | |||
| Emails | |||
| Texts | |||
Software | |||
| Operating System | Watch OS | n/a | n/a |
| Apps | |||
| Music | |||