... talkie, GPS), 1 only to the rear portion of the helmet Bluetooth headset, a total of 4 device, the otherCable connection ... .Three, priority definition:In 1, the Bluetooth device priority:All equipment for Bluetooth wireless connectivity, priority: mobile phone - before and ... this button is also common, short press the front seat helmet Bluetooth duplex intercom, intercom function long press ptt.On the ...