Polar Loop vs. Amazfit T-Rex vs. Garmin VivoActive 4 vs. HTC re Grip
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| PolarLoopRemove Buy Now | AmazfitT-RexRemove Buy Now | GarminVivoActive 4Remove Buy Now | HTCre GripRemove Buy Now |
Basic Info | ||||
| Suggested Price | $100 | $140 | $349 | $199 |
| Release | 2013 | 2019 | 2019 | 2020 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 5 days | 20 days | 8 days | 5 hours to 2.5 days |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | NA | NA | ||
| Mac | NA | NA | ||
| Windows | NA | NA | ||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | NA | 360 x 360 | 260 x 260 | 160 x 32 |
| Size | NA | 1.3 inches | 1.3ionches | 1.8 inches |
| Touch | ||||
| Type | LED | AMOLED | MIP | PMOLED |
Functions | ||||
| Audio Speaker | ||||
| Clock | ||||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 2 ATM | 5 ATM | 5 ATM | IP57 |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | NA | Build-in | Wear OS | NA |
| Apps | ||||
| Music | ||||