Bluetooth audio receiver running headphones

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)