Polar M400 vs. Asus ZenWatch vs. Garmin 645 Music vs. Swatch Touch Zero One vs. HTC re Grip
 | | | | | |
| PolarM400Remove Buy Now | AsusZenWatchRemove Buy Now | Garmin645 MusicRemove Buy Now | SwatchTouch Zero OneRemove Buy Now | HTCre GripRemove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $150 | $450 | $220 | $199 |
| Release | 2014 | 2014 | 2018 | 2015 | 2020 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | n/a | ||||
| Steps | |||||
| Swim | n/a | ||||
Battery | |||||
| Duration | 8 hours to 30 days | NA | 7 days | n/a | 5 hours to 2.5 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | n/a | ||||
| iOS | n/a | ||||
| Windows Phone | n/a | NA | n/a | NA | |
| Mac | NA | n/a | NA | ||
| Windows | NA | n/a | NA | ||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | n/a | 320 x 320 | 240 x 240 | n/a | 160 x 32 |
| Size | n/a | 1.63 inches | 1.2 inches | n/a | 1.8 inches |
| Touch | |||||
| Type | n/a | AMOLED | MIP | n/a | PMOLED |
Functions | |||||
| Audio Speaker | Alerts only | n/a | |||
| Clock | |||||
| Phone | n/a | ||||
| Vibration | n/a | ||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | n/a | ||||
| Ultraviolet Sensor | |||||
| Water Resistance | 3 ATM | IP55 | 5 ATM | IP57 | |
Notifications | |||||
| Phone | n/a | ||||
| Emails | NA | n/a | |||
| Texts | NA | n/a | |||
Software | |||||
| Operating System | n/a | Android Wear | n/a | NA | |
| Apps | |||||
| Music | n/a | ||||