Dear: High Quality£¬wish you like it! Mini adapter Plug and play Wireless transmission、 the longest sensing distance up to 10-15 meters Portable and weight light、 very convenient to carry and store Power switch for save power With 3 Keys、 including Scroll Wheel、 Page Forward and Page Backward buttons for easy Internet Surfing Optical Resolution: 1500 (dpi) Dimensions (L / B / H): 9.4x5.3x2.7cm Up to 10 meters of operating distance Power Supply: 1 x AA Battery (Not included) Mouse type: Wireless Optical Mouse Interface: USB Color: BlackPackage include: 1 x 2.4GHz Wireless Portable Optical Mouse 1 x USB receiver