The Ekho FiT-19 is the big sister of the Ekho FiT-9, combining all the necessary heart rate features you need making this the best personal trainer money can buy, Whether you"re just starting or are a veteran to fitness, the FiT-19 is the essential fitness tool for you, Heart rate functions include: current heart rate, average heart rate, max heart rate, target zone, out of zone alarm, time in/above/below target zone recall, calories burned, and ECG accuracy, Watch functions include: time of day, date, 21 laps or file storage, stopwatch, water resistant, interfaces with heart rate interactive exercise equipment, and user changeable batteries in transmitter and watch, SKU: FABE1054