wireless mouse and keyboard combo Specification Mouse * 2.4GHz digital wireless transmission, operation distance is up to 10 meters. * Built-in mouse memory, no recoding is needed after battery replacement. *4-section design, the service life of one AA alkaline battery is up to six months. *Intelligent connectivity, no need to code, plug-and-play. *Ergonomically designed, comfort grip. *Many dormant class control and more power-saving hibernation connectionless. *800dpi/1600dpi, cursor speed adjustable. Working distance: 8 - 15 metres *Power switch. *Low-voltage alarm function. Technical Spec * RF carrier: 2402MHz-2480MHz * RF operation channel: 16, auto frequency hopping * Rated operation current:15Ma, 1.5V * USB: ver. 2.0 Keyboard * 2.4GHz multimediawireless keyboard * Supports hot keys for easily accessing to Internet and multimedia player * Compatible with Microsoft Windows 95, 98, Me, NT, 2000, XP,Vista and windows 7 * With high-quality membrane key switch * With multiple language versions available * Key stroke life time: 10,000,000 times