Transmission range: 20 meters
 

 Function: battery display, call function, NFC function, voice control, 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
 

 Features: compact and easy to carry
 

 Features: Waterproof
 

 Suitable for the crowd: general
 

 Age: adult