... Operation Distance, Ergonomic Design, High Accuracy Wireless Portable Optical Mouse USB Receiver RF 2.4GHzFeatures:* 2.4GHz wireless transmission up to 10 ... Shiny and fashionable ruby red.* Decent and modern design.* High quality, with one year warranty.* Ideal laptop companion for home ... RF operation channel: 16, auto frequency hopping* USB: USB 2.0* Operation systems: Windows 2000, Me, XP, Vista, ...