The vifit activity tracker proves that not only regular workouts keep us fit vifit counts and precisely keeps track of each step taken each calorie burned by means of a 3d movement and altimeter technology it records all daily and nightly physical activity vifit also measures the duration and quality of sleep it can be carried easily and discreetly on the body and is thus not only a perfect monitor but also motivates its user to just climb stairs instead of taking the elevator transfer you