... GPS), 1 only to the rear portion of the helmet Bluetooth headset, a total of 4 device, the otherCable ... , 1 only to the rear portion of the helmet Bluetooth headset, the other a wired connection 1 ... ride, in use, when we stop over for helmet and leave the car under the condition of 10 ... button is also common, short press the front seat helmet Bluetooth duplex intercom, intercom function long press ptt.On ...