Bluetooth audio receiver running headphones $ 12.35 Transmission range 10 meters Function Call function, voice control, support music Custom processing: Yes LOGO can be printed Bluetooth protocol 4.1 Stereo How to use Lavalier Whether single or double ear, bilateral stereo Color Type A: Black [exquisite packaging] Type B: gray [exquisite packaging] Type C: red [exquisite packaging] Type D: second generation lavalier headset (black) E type: second generation lavalier headset (white)
