Features 1、Lithium batteries are equipped with Electronic Cell conservation (ECP), which can prevent lithium batteries from overcharging and overloading and improve battery life. 2、5 speed speed adjustment, the speed from low to high, basic to meet different needs. 3、The machine has novel appearance, exquisite workmanship, suitable for handheld operation, convenient and High quality. 4、The machine uses 2000mah large capacity power battery，USB charging port design, support quick charging. 5、The machine with lighting, for stone lovers to design, also can be used for emergency lighting. 6、It is ideal for kinds of material engraving and grinding, such as wood, stone, peach-pit, egg, crafts, ,ceramics, and etc. Manual sculpture, polished jade, stone, , wood, computer case, circuit boards, PC material drilling. Specification 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: 18*3.25*2.85cm/7.09*1.27*1.12in Package List 1 * Electric grinder 1 * accessories box 1 * USB charging line 1 * instruction