atongm New Wireless Bluetooth Portable Virtual Laser Projection Keyboard Compact and ultra-portable for mobility English QWERTY keyboard layout Easy connection via Bluetooth 2.0 HID profile or USB Lithium-ion Polymer rechargeable battery, Mini-B Type charge interface Compatible with latest operating systems: Windows XP/VISTA/7/8, Windows Phone 7, IOS4/5/6(iPhone and iPad) Android 3.1 higher, Mac OS X