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Corded Monaural Headset, Ultra Light Single Sided Headset 100Hz-10KHz Black Sturdy Noise Canceling For Telemarketing For 3.5mm Headphone Jack - Walmart.com
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Amazon.com: Williams Sound Deluxe Rear-wear Mono Headphones, Adult Size, 20-20kHz Frequency Response, 16 Ohms Nominal Impedance, 108 dB Sensitivity : Electronics
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