USB Rechargeable & Battery Indicator With a large capacity battery and USB-C fast charging technology, the electric cleaning brush can last for 90 minutes after only 3 hours of fast charging. The battery indicator on the surface of the cleaning brush allows you to monitor the battery level easily, helping prevent unexpected power loss during use. 7 Spare Brush Heads & Extension Handle Each electric cleaning brush comes with 7 replaceable brush heads and an extension handle with an adjustable arm to meet various cleaning needs. Compared to traditional cleaning methods, this tool can reach tight or awkward areas more easily, making cleaning more efficient and less strenuous. Powerful motor provides effective cleaning performance for multiple surfaces.