Polar F11 Women's Heart Rate Monitor Watch (Blue Glow Heart rate monitor designed to help you hit training and fitness goals Keeps U Fit Workout Program gives you personal exercise guidance WearLink Coded transmitter made from a soft, fabric material, eliminates interference from other heart rate monitors OwnCal feature shows your energy expenditure during one exercise session Large easy-to-read, backlit display with split screen; water resistant to 30 meters