The watches in this category have many different functions such as heart rate measurement, altitude measurement or stopwatch functions, in addition to a GPS function for precise location, navigation and tracking of your route. Some models are also full-fledged activity trackers that use sensors to record the number of steps, calorie consumption, distance covered and sleep activity. An evaluation of the data and communication with peripheral devices is possible via Bluetooth and ANT+. Communication with a smartphone is also standard. And yes, these high-performance measuring devices also display the time!