Polar Loop 2 vs. Polar M430 vs. Jaybird Reign vs. Garmin Vivosmart 4 vs. Amazfit GTR
 | | | | | |
| PolarLoop 2Remove Buy Now | PolarM430Remove Buy Now | JaybirdReignRemove Buy Now | GarminVivosmart 4Remove Buy Now | AmazfitGTRRemove Buy Now |
Basic Info | |||||
| Suggested Price | $120 | $255 | $150 | $130 | $199 |
| Release | 2015 | 2017 | 2015 | 2018 | 2019 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 8 days (without notifications) | 30 hours | 5 days | 7 days | 24 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 | 128x128 | NA | 48 x 128 | 454 x 454 |
| Size | n/a | 1.4 inch | NA | 0.74 inches | 1.39 inches |
| Touch | NA | ||||
| Type | LED | LCD | LED | OLED | AMOLED |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 2 ATM | WR30 | NA | 5 ATM | 5 ATM |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | n/a | NA | Build-in | ||
| Apps | |||||
| Music | |||||