TomTom Runner GPS Watch (Black) GPS Running Watch: Measures time, distance, pace, calories burned, and live stats on the go. QuickGPSFix finds your location quickly so you can get going faster Designed for Runners: Ultra-slim, lightweight, and waterproof watch designed for runners. An extra-large display and one-button control make it the perfect runners watch Heart Rate Monitor Pairing: Pair the watch with an external heart rate monitor strap to track fitness and monitor your workout intensity Training Programs: Set your own interval training program to improve fitness and speed Race Your Past Performances: Compete against yourself and try to run a previous workout faster Connected Features: Upload running data to TomTom MySports and many other fitness tracking apps via Bluetooth Wireless. Connect and recharge with the included USB cable