The Suunto Ambit3 Sport GPS sports watch is a true multisport tool. The Ambit3 tracks everything from running performance to sleep to GPS altitude. With it's connected app. Suunto Movescount. you can plan your workouts and get voice guidance during your excercise. With it's built in GPS. the Ambit3 features route navigation and track back. making sure you never get lost on your adventure or run. With the optional Suunto Smart Sensor. you can track your heart rate. even while swimming.