Polar FT40 Heart Rate Monitor Perfect for active exercisers who want clear guidance and to monitor their fitness level Displays calories burned, stores 50 training files, displays weekly workout history and has backlight ideal for indoor cycling classes Comes with comfortable fabric transmitter strap and coded heart rate transmission to avoid cross-talk. Silicone wrist band wipes clean. Downloads to free online training diary with optional FlowLink accessory Helps you exercise smarter with unique Smart Coaching features such as EnergyPointer, which lets you know if you are burning fat or improving your fitness during each workout Getting started with a Polar heart rate monitor is easy. First, make sure you thoroughly wet the electrodes on back of the strap with water and snap the transmitter into place. Then place the strap on your chest prior to starting the watch. Tip: it is best to stand away from others when starting the watch. When you are finished with your workout detach transmitter, rinse the strap with water and hang dry.