Baseline body fat scale is made with tempered glass scale measures weight, body fat and water %. Measurements range from 4% to 60% body fat; 27.5% to 66% hydration; 20% to 56% muscle; 2% to 20% bone. Percentages are measured in 0.1% increments. 12-person memory. 12.5"L x 12.25"W x 2"H. The weight capacity is 400 lb / 180 kg. Requires 2 AAA batteries (included).