Fitbit Flex vs. Jawbone UP4 vs. Polar Loop vs. Apple Watch Series 4
 | | | | |
| FitbitFlexRemove Buy Now | JawboneUP4Remove Buy Now | PolarLoopRemove Buy Now | AppleWatch Series 4Remove Buy Now |
Basic Info | |||||
| Suggested Price | $100 | $200 | $100 | $329 | |
| Release | 2013 | 2015 | 2013 | 2018 | |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 5 days | NA | 5 days | Not Yet | |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | NA | NA | NA | ||
| Mac | NA | NA | |||
| Windows | NA | 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 | LED | NA | LED | MicroLED | |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 1 ATM | NA | 2 ATM | Not Yet | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | NA | NA | NA | Watch OS 5 | |
| Apps | |||||
| Music | NA | ||||