Polar Loop 2 vs. Withings Go vs. Fitbit Charge 3 vs. Fitbit Flex vs. Garmin Vivofit 4
 | | | | | |
| PolarLoop 2Remove Buy Now | WithingsGoRemove Buy Now | FitbitCharge 3Remove Buy Now | FitbitFlexRemove Buy Now | GarminVivofit 4Remove Buy Now |
Basic Info | |||||
| Suggested Price | $120 | $80 | $150 | $100 | $79.95 |
| Release | 2015 | 2016 | 2018 | 2013 | 2018 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 8 days (without notifications) | 8 months | 7 days | 5 days | 1 year |
| Rechargeable | |||||
Compatibility | |||||
| Android | n/a | ||||
| iOS | n/a | ||||
| Windows Phone | n/a | n/a | NA | ||
| Mac | n/a | n/a | |||
| Windows | n/a | n/a | Not yet | ||
Connectivity | |||||
| Bluetooth | n/a | ||||
| Cellular | |||||
| GPS | |||||
| NFC | NA | ||||
| Wi-Fi | |||||
Display | |||||
| Color | n/a | ||||
| Resolution | n/a | n/a | 66 x 18 | NA | 88 x 88 |
| Size | n/a | n/a | .721 inches | NA | NA |
| Touch | n/a | NA | |||
| Type | LED | E-Ink | OLED | LED | NA |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | n/a | ||||
| Vibration | n/a | ||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 2 ATM | 5 ATM | 5 ATM | 1 ATM | 5 ATM |
Notifications | |||||
| Phone | n/a | ||||
| Emails | n/a | ||||
| Texts | n/a | ||||
Software | |||||
| Operating System | n/a | n/a | NA | NA | |
| Apps | n/a | ||||
| Music | |||||