Features: 30 cylinder heavy-duty hammer + simple drill set Electric drill, electric hammer, electric pick, powerful hammer Strong power: operation upgrade, safety upgrade, material upgrade, experience upgrade Can be slotted red brick cement multiple functions of a key switch Wall drilling, wall grooving, ground breaking High precision copper core motor, strong power, high temperature resistance and long life 30 cylinder heavy duty class Rated Power :1200W Load Power : 2200W Voltage: 220 v Frequency: 50 hz Speed: 0-930 r/min Hammering times: 3300min.