Function: battery display, call function, voice control, support music
Bluetooth protocol; 5.0
Channel: stereo
How to use: earplug type
Whether single or double ear; bilateral stereo
Applicable gift-giving occasions: weddings, birthdays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemorations, public relations planning
Color: black, white, blue, pink, green, yellow
