Product information:

Transmission range: 10 meters
Function: battery display, call function, support music
Bluetooth protocol: 5.0
Channel: stereo
How to use: earplug style
Whether single or double ear: two-way stereo
Occasions for gifts:
Weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemoratives, public relations planning
Color: black, gun color