Heart Rate for Dummies D-74 Strapless Heart Rate Monitor Watch Strapless heart rate monitor wristwatch for safe and effective training Patented S-Pulse technology reads heart rate without requiring chest belt Extra-large LCD display for easy viewing; 12- and 24-hour settings High/low target zone alarms, stopwatch, calendar, countdown timer, and daily alarm Includes Dummies formula instruction guide; 1-year warranty