Features: Lithium batteries are equipped with Electronic Cell Protection (ECP), which can prevent lithium batteries from overcharging and overloading and improve battery life. 5 speed speed adjustment, the speed from low to high, basic to meet different needs. The machine has novel appearance, exquisite workmanship, suitable for handheld operation, convenient and durable. The machine uses 2000mah large capacity power battery,USB charging port design, support quick charging. The machine with lighting, for stone lovers to design, also can be used for emergency lighting. It is ideal for kinds of material engraving and grinding, such as wood, stone, peach-pit, egg, crafts, glass,ceramics, and etc. Manual sculpture, polished jade, stone, glass, wood, computer case, circuit boards, PC material drilling. Specifications: Color: Orange/Green/Gray(Optional) Voltage: 3.7 V Load power: 35W Maximum current: 5A Speed: 3/6/9/12/15*1000 rpm(3000-15000rpm) Body Material: ABS Clip Head Diameter: 0.5~3.2mm Battery: 2000mAh(Lithium battery) Product Size: 8*3.25*2.85cm/3.14*1.27*1.12in Packaging weight: 233g/8.21oz Package size: 21*7*5.5cm/8.26*2.75*2.16in Note: Please refer to the actual product for the parameters, The outer packing is for reference only. Packing List: 1 * Electric grinder 1 * accessories box 1 * USB charging line 1 * instruction