The D-74 Heart Rate Monitor for Dummies offers high-end features such as a calendar, daily alarm, ECG accurate heart rate, large and easy to read display, a 12/24 hour clock, gender settings and more. This heart rate monitor also comes with the "Heart Rate Monitors for Dummies" booklet. This booklet is filled with information on how to use your heart rate monitor to get the most out of your workouts. The D-74 Heart Rate Monitor for Dummies is a competitively price, fully featured strapless heart rate monitor priced lower than competing products. This is a great tool and will help you increase the effectiveness of your workout.