Transmission range: 10 meters
 

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

 Bluetooth protocol: 5.0
 

 Channel: stereo
 

 How to use: Earplug type
 

 Single or dual ear: bilateral stereo
 

 Applicable gift-giving occasions: wedding, birthday, holiday, housewarming, trade fair, advertising and promotion
 

 Color: black, white