TeckNet 2.4G Wireless Mouse with Nano Receiver You can take the wireless mini mouse wherever you take your laptop, thanks to its pocket-sized compact design. 2.4GHz Wireless - A more secure and precise experience than the traditional FM radio system with an increased working distance of up to 10m. TeckNet Tru-Wave technology provides precise, smart cursor control over many surface types. TeckNet Co-Link technology  after pairing theres no need to re-establish pairing after a signal loss or shutdown Tiny USB Nano style receiver plugs into your PC and can stay there. Select your preferred cursor speed; 1600/1200/800dpi, Plug & play - no need to install a driver. Package contents: 1 x Wireless Mouse, 1 X Nano Receiver, 1 X Manual. 18-month warranty and friendly customer service. BATTERY NOT INCLUDED