Bluetooth Chipset: JL6973D4 / BT5.3

Audio Code: SBC/AAC

Touch Button

Driver Dize: Φ13mm

Earbuds Battery Capacity: 30mAh rechargeable battery 

Charging Case Battey Capacity: 300mAh 

Earbuds Working Time: Music/Talking time up to 4-5 Hours/Charge 

Charing Case: 300mAh Battery (About 4 times charge to earbuds) 

Charging Time: Case / 1.5 Hours, Earbuds: : 1.5 hour