Our smart body composition scale mainly works with a user friendly app "Scale Up - Body Tracking" via wireless to get 24 body index measurements including weight, BMI, body fat, visceral fat, body fat percentage, calorie, body water, water percentage, muscle mass, muscle percentage, visceral fat percentage and bone mass and more. After successful wireless connection, step on the scale, and you'll see all 24 measurements on your phone. And those health metrics get evaluated with high low or norma