21V 2000mAh Electric Cordless Spin Scrubber Specification: Voltage: 21V 10W Working time: 60-100mins Actual sustainable time denpens on the actual cleaning situation Charge and discharge times: 1000freq No-load speed: 20000r/min Weight: 1.1kg (with battery included) Size: 42.5*18*9.5cm If you encounter any question about product,please come and contact us first, powsawer customer service team is online all day, providing the reliable and quick response for you.