Polar M400 vs. Xiaomi Mi Band 2 vs. Acer Liquid Leap vs. Amazfit Cor vs. Asus VivoWatch
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| PolarM400Remove Buy Now | XiaomiMi Band 2Remove Buy Now | AcerLiquid LeapRemove Buy Now | AmazfitCorRemove Buy Now | AsusVivoWatchRemove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $23 | $90 | $79.99 | $160 |
| Release | 2014 | 2016 | 2015 | 2018 | 2018 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | |||||
| Steps | n/a | ||||
| Swim | |||||
Battery | |||||
| Duration | 8 hours to 30 days | 20 hours | 5 to 7 days | 12 days | 24 hours to 10 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | n/a | NA | |||
| Mac | n/a | NA | |||
| Windows | n/a | NA | |||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | n/a | n/a | 128 x 32 | 80 x 160 | 128 x 128 |
| Size | n/a | 0.42 inches | 1 inch | 1.23 inches | NA |
| Touch | |||||
| Type | n/a | OLED | OLED | IPS LCD | NA |
Functions | |||||
| Audio Speaker | Alerts only | ||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | NA | ||||
| Ultraviolet Sensor | |||||
| Water Resistance | 3 ATM | IP67 | IPX4 | 5 ATM | IP67 |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | n/a | n/a | KoodOS | ||
| Apps | |||||
| Music | |||||