Our mini electric grinder is a handy DIY tool. This rotary tool has 5 adjustable speeds to meet your different needs. 5 adjustable speeds: Our mini grinder has 5 adjustable speeds: 3000 rpm, 6000 rpm, 9000 rpm, 12000 rpm, 15000 rpm. The desired speed can be easily adjusted using the "+"/"-" buttons. Low speed is suitable for cleaning jobs or applications that require more attention and patience, and high speed mode is best for polishing, cutting, cutting, sanding, cutting, etc. Lights LED and USB charging: The body has LED lights that light up when you are working. This mini electric grinder will give you a more comfortable touch and higher working precision. With USB charging, you can easily charge your little grinder at any time with a power bank. The 3.7V rechargeable lithium battery can be charged for 2 hours and work continuously for 90 minutes. Multi-functional tool: This rotary tool has many functions such as cutting, polishing, grinding, drilling, etc. Perfect for DIY crafts such as root carving, wood, aluminum, copper, ceramics, jewelry, etc. Package size:22.02 x 15.32 x 3, 91cm; 454g