This is the handheld digital health analyzer that accurately calculates and tracks your body fat percentage and body mass index in just six seconds. The device stores data for up to nine separate users, helping to monitor progress toward weight loss and fitness goals. Simply input your body measurements and gender, then hold the electrode grips. The analyzer calculates your data along with the resistance value between your two palms to report body fat percentage and BMI in an instant. Results are displayed on the easy-to-read 3" LCD panel. Unlike bulky body fat scales, this device is lightweight and easily packed for travel. Requires two AAA batteries. 6 1/2" H x 9" W x 1" D. (1 lb.)