Set includes 2 x CR2032 lithium batteries.Measures weight, bmi, body fat, water, muscle mass and bone mass.8 user recognition.Smart "step-on" technology -- step on to turn on scale.Easy to read large "negative" LCD display.Uses bioelectrical impedance analysis (bia) to calculate the measurements.Product Type: Bath Scales.Number of Items Included: 3.Overall Height - Top to Bottom: 0.5".Overall Width - Side to Side: 12.2".Overall Depth - Front to Back: 12.2".Overall Product Weight: 4.4 lbs