Ametek three-stage vacuum motor, strong suction and no residue. 500W rear-drive motor, strong climbing ability, safe and stable.With quick-detachable magnetic brushes, the squeegee is equipped with portable screws, which can be replaced without any tools, and the side anti-collision PU roller. Large brush and water tanks to improve the cleaning efficiency significantly; Integrated water tank, more convenient maintenance. Double water inlets, with quick disassembled brush; Rubber strip can be replaced quickly withou tany tools; Crash proof side PU rollers; solenoid valve auto watering system.