... using the broadcom 2042 main chip, with bluetooth2.0 Interface. 2, using the Bluetooth industry leading software solutions, WIDCOMM BTW ( ... :-75bm (standard) up to 4bm, low radiation. 5, modulation: 2.4G Direct Sequence Frequency Hopping (FHSS).6, transmit power: Class ... and so on. For windows mobile phones, Nokia S60 mobile phone, smart phone, PC input up to speed typing. Bluetooth wireless keyboard ...