Gotd 2.4G Wireless Optical Mouse Mice 400-1600 cpi For Computer PC Laptop Black 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 6 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing. Up to 10 meters of operating distance . Resolution:400-1600CPI conversion. Power Supply: 2 x AAA Battery(Not included). Mouse type: Wireless Optical Mouse. Interface: USB. Size:95*54*30mm.