Packing include 1,a bluetooth keyboard 2,a Ipad bag 3,a list ... Broadcom2042 as main control chip, with Bluetooth 2.0 interface.2,Use industry-leading Bluetooth solution, WIDCOMM BTW Bluethooth software which ... is waterproof, dustproof, anti-pollution, anti-acid waterproof for silicone part7,Work with PC and commerical mobile, It will be ... , you do not need to frequently change battery bluetooth keyboard