Genius HS-500X, full-size earcups headset (Giftbox)

Frequency response 20~20KHz
Sensitivity 100dB
Cable Length 1.8 m
Microphone YES
System Requirements

Headphone 
-Drive Unit Dimensions: 40mm 
-Frequency response: 20Hz ~ 20KHz 
-Impedance: 32 ohm 
-Sensitivity: 110dB±3 dB 
-Cable length: 1.8 meters
Microphone 
-Sensitivity: -58±3 dB 
-Directivity: Omni-direction 
-Drive Unit Dimensions: 6mm 
-Frequency response: 20Hz~16KHz