Headset with Clip-on Microphone, Volume Control, Adjustable Head

Clip-on microphone, Microphone on/off switch, Leather ear pads, Adjustable cushioned head frame. Headphone Specifications: Drive unit: 40mm. Frequency range: 20Hz ~ 20KHz. Sensitivity: 105 (+/-) 4dB. Max input power: 100mW. Impedance: 32 Ohms (+/-) 15%. Volume control: Yes. Connector: 3.5mm stereo Mic plug. Microphone Specifications: Output impedance: 2.2K Ohms. Frequency range: 20Hz ~ 20KHz. Sensitivity: -54 (+/-) 3dB. Cord length: 1.8M. Connector: 3.5mm stereo Mic plug.