Multisport watch: The Suunto 9 BARO measures your heart rate directly from the wrist using the Valencell optical sensor. The GPS will help you measure distance, speed and pace. The barometric altimeter provides information on altitude, vertical speed and profile. Simple operation with buttons and touch display. Plenty of sports modes for everyone to choose from. You can change individual sports during your activity or use the multisport options. The smart battery function has several modes to choose from. Mobile phone interaction is a matter of course.