SHARKK&reg; Ultrathin iPad Bluetooth Wireless Keyboard Aluminum Cover Stand for iPad 4 / 3 / 2 Ultra slim keyboard is constructed out of Aluminum and Plastic. Keyboard works as a smart cover as well as a stand for your iPad Built in metal stand with groove on the keyboard, firmly holds your iPad in place. Keyboard features auto sleep/wake mode for your iPad, triggered by opening and closing the lid. Takes 4 hours to charge. Battery lasts 90 hours.