SaiTech IT Wireless Mouse Nano Receiver (Black) Plug-and-play wireless: Get a reliable connection from a convenient nano receiver that stays in your computer. Please Note: Batteries Not Included with this mouse, Black Colour. 2.4 GHz Operation Frequency with 800,1600 DPI Resolution By Click. Nano-receiver stays in your PC USB port or stows conveniently inside the wireless mouse when not in use (note: Receiver is stored within the mouse from production and needs to be removed once opened). No software or setup hassles-start using your mouse right away. Low Current with Power On/Off You get the reliability of a cord with wireless convenience and freedomfast data transmission and virtually no delays or dropouts. Operating Distance up to 10m Smooth, precise and affordable wireless optical 3-button mouse with nano receiver for laptop, desktop and netbook PCs.