Ipad Bluetooth Keybard +Case World's Thinnest Just 16.5 mm with Ipad ,Aluminum Alloys Make Ipad More Attactive,fashinable,rechagable (Black keyboard) Compatible with 1. Apple iPad 2, new iPad 3,ipad 4, ipad mini, iPhone/Touch with 4.0 OS 2. Computers with Windows/Mac or Linux OS Mobile System Requirements: 1. The device must have built in Bluetooth 2. The iPhone Operating System must be 4.0 or higher Computer/Laptop System Requirements: 1. Bluetooth-enabled in Windows 98, Me, 2000, XP, Vista, Win7 2. Bluetooth-enabled in Mac OS