Xiaomi Mi Band 2 vs. Garmin 645 Music vs. Polar Loop vs. Amazfit T-Rex vs. Garmin VivoActive 4
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| XiaomiMi Band 2Remove Buy Now | Garmin645 MusicRemove Buy Now | PolarLoopRemove Buy Now | AmazfitT-RexRemove Buy Now | GarminVivoActive 4Remove Buy Now |
Basic Info | |||||
| Suggested Price | $23 | $450 | $100 | $140 | $349 |
| Release | 2016 | 2018 | 2013 | 2019 | 2019 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | n/a | ||||
| Swim | |||||
Battery | |||||
| Duration | 20 hours | 7 days | 5 days | 20 days | 8 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | NA | ||||
| Mac | n/a | NA | |||
| Windows | n/a | NA | |||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | n/a | 240 x 240 | NA | 360 x 360 | 260 x 260 |
| Size | 0.42 inches | 1.2 inches | NA | 1.3 inches | 1.3ionches |
| Touch | |||||
| Type | OLED | MIP | LED | AMOLED | MIP |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | IP67 | 5 ATM | 2 ATM | 5 ATM | 5 ATM |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | n/a | NA | Build-in | Wear OS | |
| Apps | |||||
| Music | |||||