MG-G23 Portable Sports Bluetooth V5.0 Bluetooth Headphones, with 4 Speakers(Black)

Bluetooth version: jerry Bluetooth V5.0 Transmission distance: 10 meters Usage time: 4 hours Standby time: 4-6 minutes automatic shutdown Battery: 65mAh rechargeable lithium battery Function: adjust the volume, switch songs, call answering, call rejection, hang up, bluetooth play, phone replay, bluetooth back connection, voice prompt, power display, to telegraph number, intelligent shutdown, pure English broadcast