Chipset : Bluetrum

2.4G + Bluetooth + Wired (Tri-Mode)

Bluetooth version: V5.4

Driver Unit : 40mm

Impedance : 16Ω±15%

Sensitivity : 115db ±3dB 

Mic Sensitivity : -47±3db 

Directivity :  Uni-directional (ENC Mic) 

Battery Capacity : 400 mAh 

Working time : 15 hours in 2.4Ghz mode 

Charging time : 1-2 hours

Detachable Mic