New Weight Change Detection Technology highlights your net weight change in GREEN for Weight Loss and in RED for Weight Gain by calculating the change of your current weight from your previous recorded weight. Uses 4 high-precision GX sensors that instantly weigh up to 440 pounds (200 kilograms) in 0.2 lbs (0.1 kg) increments. Award-winning design features an oversized platform made of impact-resistant tempered glass, non-slip feet that will not scratch floors, and a convenient Unit button to switch between lbs, kgs, and st. StepOn Activation captures the precise weight measurements immediately upon placing feet on scale (no tapping required). Auto-calibrated and automatically turns off to conserve battery life. Ships with 4 AAA batteries, a BONUS Body Tape Measure, AND a FREE Body Fat Caliper.