Xiaomi Smart Band 9

With the Smart Band 9, Xiaomi has launched a revised version of its fitness tracker, which is designed to score points on the market with its many functions. The gadget measures numerous health data, such as heart rate, sleep, stress level and calorie consumption. All data is transferred to the corresponding app within a few moments, which also lists weight and activity history in detail...

Smartwatches and fitness wristbands are now real all-rounders: they serve as heart rate monitors and altimeters, count steps, calculate distances travelled and calories burned, sometimes using GPS, and analyse sleep patterns. Some can be used to play music, make phone calls or send and receive messages...