A sports watch is a useful gadget for charting your workouts in a fun way. Distance and speed are no longer the only things you can measure with a watch. More and more sports watches also have the option of tracking heart rate, sleep rhythm, calorie consumption, stride frequency and ground contact time, among other things. The range of running watches is so large that it is difficult to choose. How to choose the sports watch that suits you best? With this overview, you can determine which functions are of interest to you.