Weight measurement only, simple weight scale. Just ride on and turn on the power and measure your weight. It also automatically turns off to prevent forgetting to turn off. Uses 1 button battery (CR2032) (with trial battery); Minimum scale of 0.2 lbs (0.1 kg); Maximum weight of 30.7 lbs (136 kg); This product is compatible with household equipment markings that have passed the Japanese measuring law.