For those working out for weight loss and fitness. ECG-Accurate, automated 15 minute self test determines personalized target heart rate zones, pulse mode displays heart rate, accumulated calories, current zone and accumulated exercise time, graph zone displays heart rate over one hour interval, data mode recalls exercise time, average heart rate, time in each zone and calories for last session. Time/date display with two alarms and two time zones, "S"-shape design curves around the wrist to improve comfort, ergonomic chest transmitter provides increased comfort, scratch-resistant mineral glass crystal, Nike Electrolite one-touch backlighting., battrey hatch on watch and chest strap provides easy battery replacement. Water resistant to 50 meters.
