... 2042 main chip, with bluetooth2.0 Interface. 2, using the Bluetooth industry leading software solutions, WIDCOMM BTW (Microsoft officially ... operating system compatible. 4 Receiver sensitivity:-75bm (standard) up to 4bm, low radiation. 5, modulation: 2.4G Direct ... desktop and notebook computers, can also support the Bluetooth HID protocol to connect a variety of portable electronic devices, IPDA ...