Perman 2.4GHz Mini High Speed 1500DPI Wireless Optical Gaming Mouse Mice with USB Receiver for Computer PC Laptop Gamer Black Dimensions (L / B / H): 9.4x5.3x2.7cm. Mini adapter Plug and play. Mouse type: Wireless Optical Mouse. Optical Resolution: 1500 (dpi) Mini adapter Plug and play. Interface: USB. Power switch for save power. Portable and weight light, very convenient to carry and store. Power Supply: 1 x AA Battery (Not included) With 3 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing. Wireless transmission, the longest sensing distance up to 10-15 meters.