This is the perfect heart rate monitor for training in the gym and with friends. The heart rate values are transmitted securely and ECG-accurately through the use of the digitally encoded STS transmission system. While training, users can view their current heart rate and the total number of calories burned at a glance. With only two buttons, the heart rate monitor is exceptionally simple to operate.Features:*Digitally encoded wireless transmission*ECG-accurate*Easy-to-read display with large figures and pictograms*Automated function for calculating the target zone*One adjustable target zone*Calorie counter*Backlit display*Button lock*Watertight