The Polar V650 is a Cycling GPS Unit with great features to help you train. The unit has a brilliant large touch screen which makes for easy reading and use. The V650 has enough memory for up to four different bikes, making it easy to switch up your bikes, whether your mountain biking or road racing. Featuring four sport profiles; road cycling, mountain biking, indoor cycling and other, theses profiles can be altered and customised to suit you are your training sessions. You can have up to six screens with up to eight data fields each, and there are a huge amount metrics you can set in those slots. But in addition to the standard numerical views, you can set visualisations: an altitude graph, HR graph, HR zones view and the speed graph, get for seeing your progress through training.