Brand Rapoo Model 8900P Quantity 1 Piece Color Black Material Stainless steel + ABS Compatible Models Laptop Computer Interface USB 2.0 Features 4.0mm at thinnest stainless steel base and aluminum alloy panel bring you comfortable tactile; The accurate scissor key structure allows you to press the buttons with ease; Reliable 5GHz Wireless transmission for away from the interference of 2.4GHz Wireless bluetooth and Wi-Fi devices; With touch control multimedia mouse; Keyboard and mouse powered by 2 x AA batteries Supports System Windows 7 / Vista / XP Packing List 1 x Keyboard 1 x Mouse 1 x Software CD 1 x Receiver 4 x AA batteries 1 x Multi-languages manual