Bluetooth Chipset: 5756C3 / BT5.3

Audio Code: SBC/AAC

Touch Button

Driver Dize: Φ13mm 

Speaker Sensitivity: 118 ± 3db

Earbuds Battery Capacity: 30mAh rechargeable battery 

Charging Case Battey Capacity: 300mAh 

Earbuds Working Time: Music/Talking time up to 5-6 Hours/Charge 

Charing Case: 300mAh Battery (About 3 times charge to earbuds) 

Charging Time: Case / 1.5 Hours, Earbuds: : 1 hour