Polar F55 Heart Rate Monitor Watch (Lava Aluminum) Heart rate monitor designed to help you hit training and fitness goals Polar Body Workout feature provides basic guidance for muscular strength training WearLink Coded transmitter made from a soft, fabric material, eliminates interference from other heart rate monitors Keeps U Fit Workout Program gives you personal exercise guidance Large easy-to-read, backlit display with split screen; water resistant to 30 meters