Fitbit Charge HR vs. Fitbit Flex vs. Polar Loop vs. Apple Watch Series 4
 | | | | |
| FitbitCharge HRRemove Buy Now | FitbitFlexRemove Buy Now | PolarLoopRemove Buy Now | AppleWatch Series 4Remove Buy Now |
Basic Info | ||||
| Suggested Price | $150 | $100 | $100 | $329 |
| Release | 2015 | 2013 | 2013 | 2018 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 5 days | 5 days | 5 days | Not Yet |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | NA | NA | NA | |
| Mac | NA | |||
| Windows | NA | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | NA | NA | NA | 384 x 480 |
| Size | NA | NA | NA | 1.78 inches |
| Touch | NA | NA | ||
| Type | OLED | LED | LED | MicroLED |
Functions | ||||
| Audio Speaker | ||||
| Clock | ||||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 1 ATM | 1 ATM | 2 ATM | Not Yet |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | NA | NA | NA | Watch OS 5 |
| Apps | ||||
| Music | ||||