Best suited to athletes who also like to be kept updated on their fitness level when they are not training: The M400 HR Multi-Function watch by Polar. It comes with an integrated GPS sensor which informs you of the speed you achieve and distance you cover while cycling or running. The included heart rate belt makes it possible to monitor your heart rate during your training sessions for optimized training control. Aside from sporty activities, the M400 HR Multi-function watch uses its activity tracker to provide important information about your general state. It can be synchronized using the Polar App as well as your PC to make sure all of your training data is kept safe in one place. A program for optimized calorie burning and for monitoring your sleeping pattern top off all of the useful functions. A versatile companion for training and everyday use: The M400 HR Multi-Function watch. "