Weight Watchers branded digital glass weight scale. Precisely measures body fat body water and bone mass. Uses bio-impedance analysis (BIA). Calculates body mass (BMI) with gender age height and weight. Settings that can be saved for up to 4 users. Large 1.5" digital display. Readouts in 0.1 lb increments. Sleek streamlined 11.8" x 12.5" platform. Safety tempered glass platform supports weights up to 400lbs/182kg. Long-life lithium battery (CR-2032) included.