... .0 interfa Case Cover With Bluetooth Keyboard for iPad2Bluetooth keyboard Product Features: 1, Bluetooth 3.0 interface with AIROHA AB1108 as main control chip. 2, WIDCOMM BTW Bluetooth technology which ... , Modulation system: FHSS 2.4G 4, Transmitting power: Class 2 5, Operating voltage: 3.0-5.0 6, Work current: <4.0MA 7, Standby ...