Head Phone A4TECH HS-28i

Play, pause, rec, stop, eject! Amazing quality. Stunning Sound. Superior Comfort! The soft ear-pad covers comfortably on ear to provide absolute sound quality as if you' re in your own world. In-Line Mic is great for messenger on the PC!
Style: On-the-Head
Product name: Stereo Headset
Frequency Response: 20 Hz ~ 20 KHz
Nominal Impedance: 32 ohms
Microphone Sensitivity: -58 db
Sensitivity: 105 dB±3 dB (at 1000 hz )
Speaker Diameter: F40 mm
Earphone / Microphone Plug: 3.5 mm Stereo
Controller: Volume knob on the headset
System Requirements: WindowsXP / Vista / 7 / 8 / 8.1 / 10