1. Featuring a pen-shaped design, this electric Grinder is and provides a comfortable grip. Besides, it comes with an efficient heat dissipation system to the motor for long-lasting durability. 2. Designed with 3 levels of power adjustment, this electric grinder can meet your needs for different operations which can be used for polishing, carving, rust removal, cutting, drilling, etc. and it is very practical. 3. It is constructed of plastic and metal material. 4. Universal USB charging port, can be anywhere with USB. 5. It is suitable for jade carving, carving, chipboard, epoxy board, etc. Voltage:3.6 V Special Feature:, Rechargeable Maximum Rotational Speed:15000 R Minimum Speed:5000 R Colour:Black-Blue Material:Metal+Plastic Package Contents: 1 * Electric sharpener 1 * Grinding 1 * USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.