The Ekho WM-25 Heart Rate Monitor is a multi-function heart rate monitor that includes additional features of time in, above and below zone recall. Unique to Ekho heart rate monitors, the unit's weight management feature lets you enter how many calories you want to burn during the day. Then, as you work, walk, exercise, and play, the watch tells you how many calories you've scorched on your way to your goal. It's a terrific way to keep fit and it makes sure that you don't overlook your daily activities as important allies in your weight loss plans. Plus, it's designed to interface with the heart-rate-interactive equipment in most health clubs, adding even more versatility. In addition to its weight loss functions, the WM-25 tracks your current, average and maximum heart rate while also offering a target alarm that lets you know whether you're working in, above, or below your target heart rate zone. As a result, you'll maximize your caloric burn and enjoy the most effective cardiovascular workout available.