Polar M400 vs. LG Watch Style vs. Swatch Touch Zero One vs. Xiaomi Mi Band 4
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| PolarM400Remove Buy Now | LGWatch StyleRemove Buy Now | SwatchTouch Zero OneRemove Buy Now | XiaomiMi Band 4Remove Buy Now |
Basic Info | ||||
| Suggested Price | $200 | $249 | $220 | $25 |
| Release | 2014 | 2017 | 2015 | 2019 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | n/a | |||
| Oxygen | ||||
| Sleep | n/a | |||
| Steps | ||||
| Swim | n/a | |||
Battery | ||||
| Duration | 8 hours to 30 days | n/a | 20 days | |
| Rechargeable | ||||
Compatibility | ||||
| Android | n/a | |||
| iOS | n/a | |||
| Windows Phone | n/a | n/a | ||
| Mac | n/a | |||
| Windows | n/a | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | n/a | 360 x 360 | n/a | 120x240 |
| Size | n/a | 1.2 inches | n/a | 0.95 inches |
| Touch | ||||
| Type | n/a | P-OLED | n/a | AMOLED |
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 | IP67 | 5 ATM | |
Notifications | ||||
| Phone | n/a | |||
| Emails | n/a | |||
| Texts | n/a | |||
Software | ||||
| Operating System | n/a | Android Wear 2 | n/a | AMAZFIT OS |
| Apps | ||||
| Music | n/a | |||