Featuresr r highly accurater adopt 4 high precision sensors to get consistent and accurate measurements the weight capacity is up to 330lb 150kg with high precision division of 02lb 01kgr r battery freer with automatic power generation control system by converting mechanical energy into electrical energy the scale can be used completely battery free never run out of power use it anytime anywherer r one press to power upr press or stamp on the middle button to power up and activate