A4tech stereo headset HS-28 wi

Technical specifications

.Model: HS-28
.Style: On-the-Head
.Product name : Stereo Headset
.Frequency Response: 20Hz~20KHz
.Nominal Impedance: 32ohms
.Microphone Sensitivity: -58DB
.Sensitivity: 105dB±3dB (at 1000Hz )
.Speaker Diameter: F40mm
.Earphone / Microphone Plug: 3.5mm Stereo
.Controller: Volume knob on the headset

Package Contents:
.Headset