Califone Switchable StereoMono Mono Stereo Black Mini phone 3.5mm Wired 36 Ohm Over the head Binaural Ear cup 10 ft Cable - Office Depot
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Hamilton Electronics HA2V SchoolMate Personal Mono - Stereo Headphone with in-line Volume - Walmart.com
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Amazon.com: Egghead Switchable Stereo Mono Over Ear Headphones 3.5mm (1/8") Plug - Pack of 10 (EGG-IAG-1003-SO-10) : Electronics
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