Entry Level BT TWS Earbuds Bluetooth Earphones Wireless Headphones Black

Chip: Blue touch
Bluetooth version: 5.0
Effective distance: 15m(without obstacles)
Charging time: 1 hour for headphones and 1.5 hours for charging case
Charging box charging input: DC5.0V=300mA
Output of charging case: DC5.0V=30mA(single headset)
Charging box battery capacity: 250mAh(customized 300mAh)
Headphone battery capacity: 30mAh*2(customized 50mAh)
Music duration(normal volume): about 3.5-5hrs
Call duration: more than 3 hours
Total working time with charging box: 15-25 hours