Fitbit Flex 2 vs. Fitbit One vs. Polar Loop 2 vs. Fitbit Sense 2
 | | | | |
| FitbitFlex 2Remove Buy Now | FitbitOneRemove Buy Now | PolarLoop 2Remove Buy Now | FitbitSense 2Remove Buy Now |
Basic Info | ||||
| Suggested Price | $100 | $100 | $120 | $300 |
| Release | 2016 | 2012 | 2015 | 2022 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | n/a | |||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 5 days | 10-14 days | 8 days (without notifications) | 6 days |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | n/a | n/a | n/a | |
| Mac | n/a | |||
| Windows | n/a | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | n/a | |||
| Resolution | n/a | n/a | n/a | 336x336 |
| Size | n/a | n/a | n/a | 1.59 inches |
| Touch | n/a | |||
| Type | LED | OLED | LED | AMOLED |
Functions | ||||
| Audio Speaker | ||||
| Clock | ||||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 5 ATM | Splast Resistant | 2 ATM | 5 ATM |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | n/a | n/a | n/a | |
| Apps | ||||
| Music | ||||