Quick Overview Special design for iPad, it will be more convnient to carry with iPad bag, Support wireless transmission technology, Built-in Keyboard and Lithium Battery, really continuous standby for 100 days, if you use 4 hours everyday that you can use 20 days. You can use the built-in keyboard on most device that have wireless transmission technology or USB adaptor. Moreover, this iPad case can works with Windows, Mac, Linux, iPad, iPhone 4, iPhone 3GS if upgraded to IOS4.... @ Special design for iPad, it will be more convnient to carry with iPad bag @ Function: iPad case with Built-in keyboard @ Material: Leather + Silicone @ Silence design, It will not affect other people's rest @ Waterproof, dustproof, anti-pollution, anti-acid, waterproof for silicone part @ Soft, space saving @ Band: The ISM band of 2402 ~ 2480MHz @ Support wireless transmission technology @ You can use this keyboard with most device that have wireless transmission technology or USB adaptor @ Modulation system: FHSS 2.4G @ Transmotting power: Class 2 @ Perfect combination for iPad @ Suit for a variety of positions @ Works with Windows, Mac, Linux, iPad, iPhone 4, iPhone 3GS if upgraded to IOS4. @   |