Color: Black and white Product material: ABS Abrasive head material: 150 grit Gears: 2 speeds Speed: 1 speed 5000rpm, 2 speeds 7000rpm Internal battery: Li-ion 3.7V 600mA Charging voltage: 5v 1A Charging time: 3 hours Operating time: 3 hours Main unit size: 3.2x3.2x13.8cm,135g
