Quick overview from the supplier:
Headset A4tech FH150U, 40mm driver, 20-20kHz, 32 Ohm, 98db, 150g, In-Line Controls, Noise Canceling Mic, Leather Ear Pads, 2.0m, USB, Black
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A4Tech/Fstyler USB Headphone
Φ40 mm High Performance Driver Unit
Leather Padded Adjustable Headband
On-Ear Soft Leather Ear Pads
Flexible Rotation Microphone
Single-Directional Noise Canceling Mic.
In-Line Convenient Controller:
Mic. Mute, Volume +/-, Previous/Next Track, Speaker Mute
Convex Anti-Mistouch Volume Control Button
150g Lightweight Design
200 cm USB Braided Cable
Best for Call Center, School, Business, Conference, etc.
Frequency Response: 20 Hz - 20 KHz
Sensitivity: 98 dB
Impedance: 32 ohm
Microphone:
Frequency Response: 100 Hz - 10 KHz
Sensitivity: -42 dB
Cable Length: 200 cm
Plug: USB
Color: Black
