... keyboard built-in. Features :Perfect combination for iPad.Use for the iPad in a variety of positions ... Works with Windows, Mac, Linux, for iPad, for iPhone 4, for iPhone 3G S if upgraded to ... , dustproof, anti-pollution, anti-acid, waterproof for silicone part.Work with PC and commercial mobile, ... 4.5 hoursLi-ion battery capacity: Minimum 430MAH Packing :A Bluetooth keyboardA Bag for iPadA list of ...