Chipset : JL 

2.4Ghz + Bluetooth + Wired (Tri-Mode)

Driver Unit : 50mm

Impedance : 16Ω±15%

Sensitivity : 112db ±3dB 

Frequency Response : 20HZ-20KHZ 

Mic Sensitivity : -38±3db 

Directivity : omni-directional 

Working range : 10M 

Battery Capacity : 900 mAh

Working time : 30 hour in 2.4Ghz mode , 50 hours in Bluetooth mode

Charging time : 2-3 hours

Detachable Microphone