Koss ED1TC Headphone, Stereo, Wired, 32 Ohm, 100 Hz 20 kHz

Ideal for schools, libraries and training departments, this stereophone incorporates a plastic ear cushion that allows easy cleaning and maximum durability in multiple user environments. Formed from highly durable ABS plastic, the ear cushion creates a seal and vacuum to the ear that reduces ambient noise interference and leakage so that the sound comes through loud and clear.