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 highprecision GX sensors that instantly weigh up to 440 pounds 200 kilograms in 02 lbs 01 kg increments Awardwinning design features an oversized platform made of impactresistant tempered glass nonslip 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 Autocalibrated and automatically turns off to conserve battery life Ships with 4 AAA batteries a body tape measure and a body fat caliper