Fitbit Charge vs. Fitbit Charge HR vs. Fitbit Flex vs. Apple Series 6 vs. Apple Watch Ultra
 | | | | | |
| FitbitChargeRemove Buy Now | FitbitCharge HRRemove Buy Now | FitbitFlexRemove Buy Now | AppleSeries 6Remove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | |||||
| Suggested Price | $130 | $150 | $100 | $399 | $799 |
| Release | 2014 | 2015 | 2013 | 2020 | 2022 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 7-10 days | 5 days | 5 days | Not yet | 36 hrs |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | NA | NA | NA | ||
| Mac | |||||
| Windows | |||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | NA | NA | NA | 384 x 480 | 502x410 pixels |
| Size | NA | NA | NA | 40mm | 1.92 inches |
| Touch | NA | NA | NA | ||
| Type | OLED | OLED | LED | MicroLED | |
Functions | |||||
| Audio Speaker | |||||
| Clock | LTPO OLED Retina | ||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | 5 ATM | ||||
| Water Resistance | 1 ATM | 1 ATM | 1 ATM | 10 ATM (100 Meters) | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | NA | NA | NA | WatchOS 5 | WatchOS 9 |
| Apps | |||||
| Music | |||||