Transmission range 15 meters
Function Power display, call function, support music
Bluetooth protocol 5.0 channel stereo
How to use earplug
Whether single or double ear, bilateral stereo
Suitable for gift-giving occasions, weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemoratives, public relations planning
Color 08 black, 08 white,