Transmission range: 10 meters

Function: battery display, call function, music support, multi-point connection

Bluetooth protocol: 5.0

Channel: stereo

Usage: earplug style

Single or dual ear: bilateral stereo

Applicable gift-giving occasions: weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemorations, public relations planning

Color: black, white

Size: 4.1*8.6*9.3cm