Features: 1) Power: 1,200W 2) Voltage: 110V / 60Hz, 220V / 50Hz 3) Diameter: 17" 4) Speed: 175RPM 1)Controlled by hand-adjustment2)It's outstanding for washing floor,carpet,polishing and low speed burnishing;3)It works by gears equipped with two capacitors which makes it safter and more powerful;4)Can work with a foamer Multi-Functional Burnisher