Product information:
Transmission range: 10 meters
Function: call function, support music, TF card, FN folding, stretch, automatic shutdown without a long time, energy-saving plug-in
Bluetooth protocol: 5.0
Channel: Stereo
How to use: Head-mounted
Single or dual ear: Bilateral stereo
Color: black [BK66], red [BK66], blue [BK66], white [BK66]
Speaker specification: 40mm
Version: Bluetooth 5.0
Transmission range: within 10 meters
Function: Bluetooth card FM
Battery capacity: 200mA

Packing list:
Headphone*1