Perixx PERIDUO-880, Bluetooth Keyboard with Touchpad - Multi-touch Support with Windows 7 and 8 - Portable Cover with built-in Stand for Tablet and Smart Phone User Bluetooth 3.0 Technology with up to 30ft Operating Range - Support HID (Human Interface Device) Build-in touchpad with Control of Pointing Feature (Support Windows XP, Vista, 7, 8 and Android 3.0 - 4.4) Support Multi-touch Feature with Windows 7 and 8 Operating System Silent X Type Scissor Keys - Non-slip Rubber Feet On/Off Switch with Li-ion Rechargeable Battery