Fitbit Flex 2 vs. Fitbit Flex vs. Apple Watch Series 4 vs. HTC re Grip
 | | | | |
| FitbitFlex 2Remove Buy Now | FitbitFlexRemove Buy Now | AppleWatch Series 4Remove Buy Now | HTCre GripRemove Buy Now |
Basic Info | ||||
| Suggested Price | $100 | $100 | $329 | $199 |
| Release | 2016 | 2013 | 2018 | 2020 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 5 days | 5 days | Not Yet | 5 hours to 2.5 days |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | n/a | NA | NA | |
| Mac | NA | |||
| Windows | NA | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | n/a | |||
| Resolution | n/a | NA | 384 x 480 | 160 x 32 |
| Size | n/a | NA | 1.78 inches | 1.8 inches |
| Touch | n/a | NA | ||
| Type | LED | LED | MicroLED | PMOLED |
Functions | ||||
| Audio Speaker | ||||
| Clock | ||||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 5 ATM | 1 ATM | Not Yet | IP57 |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | n/a | NA | Watch OS 5 | NA |
| Apps | ||||
| Music | ||||