Specification: 1. 2.4G RF Keyboard 2. RF carrier:2402MHz-2480MHz 3.10 Meters working distance 4.intelligent connectivity,no need to code,plug-and-play 5.Rated operation current:2*AAA 6.USB:ver.2.0 7.USB requirement available port. Operating System required Use with Windows 2000/XP/VISTA/WIN7/OS operation system Features: 2.4G RF Wireless Optical Mouse,optical tracking. Working distance 10 meters Wireless Carrier Frequency: 2402MHz-2480MHz Convenient 1000/1600dpi switch, Plug & Play; Key-pressing Lifetime:3 000 000 ¨C5 000 000 times Charging & Receiving Led indicators on receiver; Intelligent Power Saving, no need On/off switch Operating System required Use with Windows 2000/XP/VISTA/WIN7/OS operation system. Yellow box, color box.