The Polar FT7 Heart Rate Monitor device packs a high efficiency workout computer into a compact package that fits on your wrist. In addition to highly accurate heart rate tracking with the Polar WearLink+ transmitter, the FT7 helps you analyze the data as you train so that you can optimize your results. Log into polarpersonaltrainer.com to keep a training diary, access training programs and more. When you are not working out the Polar FT7 continues to function as a regular wrist watch with a 12/24-hour clock, date/weekday indicator, alarm, and a backlight for use in any lighting.