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Koss 176851 QZPro Noise-Reducing Headphones

Koss 176851 QZPro Noise-Reducing Headphones

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Product Description:

Koss 176851 QZPro Noise-Reducing Headphones

QZPro Noise-Reducing Headphones 
Delivers combination of passive & active noise reduction (ANR)
Soft vinyl, closed cushions create a seal around the ear
Active noise reduction circuitry built directly into the ear cups
Noise reduction circuitry can be turned on & off with a flip of a switch
Extra-soft, padded headband
Completely collapsible—ideal for travel
Freq resp: 40 Hz–20 kHz
Imp: 32?
Sensitivity: 90 dB/mW
4-ft single entry, straight cord
Requires 2 AAA batteries for approx. 30 hours of continuous play
Includes 2-prong airline adapter 
Koss 176851 QZPro Noise-Reducing Headphones

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