Samyo Portable Ultra-thin Aluminum Cover Case Bluetooth Wireless Keyboard with Stand for Apple Ipad 4 / 3 / 2 - Black The keyboard doubles as a cover with a clip-and-go magnet. Easily edit your messages or emails when you're outside. Light weight, quiet keystrokes, waterproof and dustproof. Energy saving and Environment-friendly, features an auto sleep/wake mode for your iPad. Built-in lithium battery, can last for approximately 100 hours per charge. Specialhomescreen key for one touch access to variety of application. Ultra-thin aluminum case with 4 Rubber anti slip pads, Portable and non-slip design.