Lime Green Protective PU Leather Case with Built-in Wireless Bluetooth Keyboard for use with the new Apple iPad (3rd generation) and iPad 2 Specially designed for iPad 2 in 1, it can both as a iPad case and a keyboard Continuous standby for 100 days, if you use 4 hours everyday that you can use 20 days Built-in Lithium Battery (280mAh) which can last for about one week Works with Android version if upgraded above 3.0 or ISO version