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Transmission range 15 meters
Function Power display, call function, voice control, 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
