Classroom Headphone Set (24 Robust Headphone MK2 Detachable USB)

MK2 Robust Almost Unbreakable Headphone Detachable Cable USB2 Cable. 24 sets of MK2 Robust Headphone & Microphone with Detachable USB cable. Robust Headphone & Microphone, USB Cable. Crusader's classroom headphone sets are bundled together to make purchasing easier and save you money.

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