Specifications: Made of premium ABS material, smooth and durable USB mouse. Ergonomic design brings comfortable grip and control feeling. Symmetric design allow this wireless mouse to fit both left and right hands using. 3 buttons and 1200DPI, flexible and fast response. Compatible for Windows/Mac OS/Linux operation systems. Item Name: Wireless Mouse Material: ABS Type: 2.4GHz Wireless DPI: 1200DPI Effective Range: about 10 Meters Button Numbers: 3 Buttons Power Supply: 1 x AA Battery (Not Included) Features: Universal, Wireless Connection, 1200DPI, Plug and Play Size: 110mm x 65mm x 38mm/2.68"; x 2.56"; x 1.50"; (Approx.) Notes: Due to the light and screen setting difference, the item'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 Mini USB Receiver (No Battery, Others Not Included)