Outdoor Functions include: GPS, altimeter, compass and weather including temperature and barometric pressure. * Training Functions include: GPS-based speed, pace and distance, chronograph, countdown timer, interval timer and preconfigured multisport modes (running, cycle and swimming). * General Functions include: time, date, alarm, dual time, multiple languages, GPS timekeeping, adjustable backlight, versatile button lock, low battery indicator, power save modes and water resistance to 100". * Heart rate specific functions include: Real-time average and max heart rate, calories, heart rate limits, heart rate graph, heart rate zones, EPOC & V02 max values, Peak Training Effect and Recovery Time. * 1.97" x 1.97" x 0.61" Face