Sportline Duo 1010 Women's Dual Use Heart Rate Monitor With Full Service Watch, Chronograph And Timer Women's heart rate (HR) monitor with full service watch, chronograph, and timer On-demand HR reading by touching anywhere on the steel watch face Continuous HR measurement using included chest strap HR zone and fat-burn zone programming; calorie burn monitor; percentage of maximum HR Water resistant to 50 meters; five-year warranty against manufacturer's defects