Specifications: Ultra-slim and ergonomic design makes it perfect fit with your palm. Wireless connection supports about 10m operation distance. No delay, high sensitivity, offering excellent operation feeling. No drive needed, just plug and play for use. Type: Wireless Mouse Material: ABS + Metal Connection: Wireless Interface: USB Operation Distance: 10m Button Numbers: 4 Buttons Adjustable DPI: 4 Modes Working Method: Optical Power Supply: Build-in Battery (Included) Compatible System: for Windows 7/8/10/XP/Vista, for Linux Features: Ultra-slim, Ergonomic, Sleep Mode, Mute Click, Universal Size: 113mm x 58mm x 23mm/4.45inch; x 2.28inch; x 0.91inch; (Approx.) Notes: Due to the light and screen setting difference, the item 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Mouse 1 x Receiver 1 x Charge Cable (Others Not Included)