Chip: JL6973D4                                                                                                               
Bluetooth: V5.3 10 meters bt connection
Loudspeaker: 8mm/32Ω
Earbud battery: 45mAh                                                                                                 
Case battery: 350mAh                                                                                
Playtime: 4-5.5 hours                                                                                                              
Call duration: around 5 hours                                                     
Auto pairing
Multifunctional touch control                                                           
High definition calling
Type C 5V/2A input