The SC-7V headphones from Hamilton offer great sound quality and comfort at an incredible price. Perfect for use in schools and other institutions, the SC-7V has a comfortable, adjustable headband and the over-ear earcups have washable, replaceable leatherette ear cushions. A built-in volume control allows a listener to make adjustments without affecting others when listening at a group station. Patented Automatic Stereo/Mono (ASMTM) technology allows the headphones to detect whether they're plugged into a mono or stereo audio sound source, so you can plug into any sound system without worry. The single-sided cable is designed to minimize tangles. The 1/8" mini plug and 1/4" adapter ensure your ability to connect to any audio device.