For urban and trail runners who want sporty design with advanced GPS and training features, along with loads of options to keep an eye on their activity. Polar Flow web service Enables planning and in-depth analysis of training Track pace, distance and altitude with the built-in GPS Follow your 24/7 activity, calories and steps Plan, sync and share your training with Polar Flow mobile app and web service Polar Flow mobile app Syncs automatically and displays training data instantly Set targets to beat your personal best Find your way back home with Back to Start Train at the right intensity within your personal heart rate zones (requires H7 heart rate sensor)