Full Size keyboard:NoPackage:Yes Wrist Support:No Style:Standard,Ergonomics,Mini,For Laptop,Track Ball Keyboard Interface Type:USB Operation Style:Capacitive Language:English Keyboard Standard:laptop keyboard Application:Desktop,Laptop,Tablet Type:2.4Ghz Wireless Origin:Mainland China Certification:CE Product features: 1.Decent design mini size wireless keyboard 2.Hand held style 3.15 multi-media keys 4.Natural trackball with two push buttons on the left and right conner 6.With easy scroll wheel 7.Plug and play 8. 10m wireless distance Product parameters: Connection:2.4G wireless Size:26 x 12 x 2.5 cm Product weight:210g Weight after packing:300g Mouse DPI:1200 Tracking method: Mouse trackbal Power suppply:2pcs AA battery Color:Black Button lifetime:8 million times System requirements:Windows 2000, Me, XP, Vista, Win 7, Linux, Android and Mac or higher