Mini Cordle Electric Drill Power Tool Multifuctional Grinder Removable Battery Rechargeable 3 Speed Engraving Pen For HOME DIY Product parameters Bracnd name:DONUMEH Type name: 3-speed-Drill Battery:2000MAH LithiumBattery(18650) Charging time:2hour Collect Chuck Diameter: 0.5-3.2mm Speed:9000/14000/20000Rpm/min EngravingOutput Voltage: 3.7V Rated Input Power: 20W Rated Voltage: 110V~220V USBmicro charging ok Feature: 1.Durable And Reliable -Small volume, light weight, easily carry, comfort grip handle, offers better control while drilling., convenient to use. 2.Regulating Speed-This electric carving tool has 3 speed adjustment,speed adjustment range9000/14000/20000 r/min.Battery level indicator, so you can know the power level more clearly so that you can charge it in time. 3.Complete Acceories-Equipped with 31pcs acceories for drilling,all ready and complete. 4.Removable battery, two charging methods: battery charging/USB charging. 2 batteries, used alternately, work more efficiently. 5.Perfect Grinder - Perfect electric grinder for cutting, engraving, milling, grinding, polishing, removing and drilling. The grinder engraving kit is neceary for DIY carving and grinding. 6.Suitable for jade agate, nuclear carving, wood carving, grinding aluminum plate, thin copper board, plastic board, chipboard, printed circuit board, epoxy board.