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.

Fitbits Charge 4 (99 euros) has everything a fitness tracker needs - plus extras

Best-selling tracker, no other manufacturer offers so many different functions in one device

Smartwatches: Smart lifestyle products For whom? Smartwatches are interesting for anyone who wants to replace their classic wristwatch with a modern lifestyle product. What can they do? Smartwatches score points in two ways: firstly, they offer fitness functions such as distance measurement, calorie display or pulse measurement and thus support their owners during sports...

For 150 euros, the Charge 4 offers good hardware paired with a great app that evaluates both fitness and health data in a comprehensible way. This fitness tracker is highly recommended.

Fitbit has expanded the Charge range: the Charge 4, which is waterproof to a depth of 50 metres, is the first Fitbit tracker to have a built-in GPS sensor. Speaking of water: the Charge 4 now also tracks kayaking and canoeing, as well as skiing. After synchronisation, the running or cycling lap is displayed as a map in the Fitbit app...