L'avvento Wireless Headphone, Bluetooth 5.0

Bluetooth Version V5.0 Touch Controller (Play – Pause – Volume UP – Down) Working Distance Range 10M Driver Size 2* 40 mm 

 Rechargeable Battery:

 3.7v, 300 mAh 

Charging time: 

about 2H 

Talking/Music Time: 

about 20h 

 Impedance:

 64 ohm S.P.L