Series name: JOYROOM Openfree OE3       
Model: JR-OE3
BT version: BT5.4                  
Audio codec format: AAC, SBC
BT range: 10m                                    
Water resistance: IPX4
Listening time: 5~6h             
Listening time with charging case: about 25h
Battery capacity: 40mAh (earbuds)/400mAh (charging case)
Charging time: about 2h      
Charging input: 5V⎓1A      
Charging port: Type-C
Speaker size: Ф13mm
Material: ABS+PC               
Weight: earbud 4.9g, charging case 36.2g