... with bluetooth2.0 InterfaceLeather case with built-in bluetooth keyboard keypad84 key,with 17 ipad ipad shortcuts key ... chip, with bluetooth2.0 Interface 2, using the Bluetooth industry leading software solutions, WIDCOMM BTW (Microsoft ... operating system compatible. 4 Receiver sensitivity:-75bm (standard) up to 4bm, low radiation 5, modulation: 2. ... mobile phone, smart phone, PC input up to speed typing