Calculates visceral fat, resting metabolism and skeletal muscle mass levels all which are helpful indicators when determining your calorie intake and exercise levels. Displays body fat percentage, weight and BMI to help you fine tune your weight loss. Uses full body sensing technology hand grip and foot electrodes to facilitate a highly accurate reading. Stores personalized information for up to four people. Built-in memory lets you track your progress along the way. Unique pull-up handlebar display screen. 330lb. capacity. Age: 18 +; Height: 3″4 ” 6″6. Uses four AA batteries.