This Heart Rate Monitor Watch with RESET, SET, MODE, SENSOR and ST/SP buttons for easy operation. * Daily alarm and hourly chime.Chronograph (stopwatch) with split lap time.Exercise counter with automatic and manual override calorie counter. * The Heart Monitor Watch can calculate your heart rate and calories burned while exercising. * It has been designed to calculate the calories burned and pulse rate of an average. * With an advanced ECG (Electrocardiography Technology) Sensor which detects your pulse from your blood pressure.