- GPS
- Good analysis of fitness
- long endurance
- Little robust
- Display poor
- Alarm clock only via mobile phone
Thanks to the built-in GPS sensor, the Charge 4 does not need a mobile phone to record the route when jogging. The tracker recognises sports and sleep automatically and is clever in some ways, for example with remote control of Spotify music on the mobile phone or Fitbit Pay for contactless payment at the checkout.