LifeTrak C200 Core Heart Rate Watch Monitors your Free Living Daily Activity Integrates ECG accurate HEART RATE into Calorie Calculation CALORIE calculation is not based solely on the motion of the accelerometer Utilizes patented DDC (Dynamic Distance Calibration) to calibrate the DISTANCE of each Step taken throughout the day Recognizes the difference between walking, jogging and running strides Unique ESF (Enhanced Step Filtering) eliminates the counting of most non-step activities, such as driving or biking The proprietary ESF gives the user a truer daily STEP COUNT Visually monitor your activity hourly, daily or weekly with our AGD (Active Graphics Display)