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Perfect for smaller wrists, this midsize watch gives triathletes and fitness enthusiasts the unprecedented ability to track, store, and analyze several key indicators of personal performance with a GPS, data recorder, and heart rate monitor. Includes wrist unit, digital chest transmitter, and speed-distance sensor. GPS provides latitude, longitude, altitude, and elevation data, including vertical ascent/descent rate. Continuous odometer keeps track of total distance for single or multiple workouts. Zone and distance alerts watch for exceptions to speed, pace, and distance. Alarm notifies when you depart your preset target heart rate zone, while the time-in-zone function measures time spent within your heart rate target zone. Offers maximum heart rate zone calculation, percent of maximum heart rate display, and recovery rate timer. 100-lap data, Indiglo night-light, stopwatch, five programmable alarms, and three countdown timers. Three rows on watch face can be customized to show speed, heart rate, lap/pace, distance, ascent rate, distance.