Etymotic Research mc3 Noise-Isolating In-Ear Stereo Headphones with Mic (Blue)

The mc3 in-ear headphones from Etymotic Research provide high-quality performance in a compact package. The headphones feature high-output neodymium moving coil drivers to provide a better than 85% response accuracy with tight bass and clear treble at all volume levels. User-replaceable ACCU·Filters protect the drivers from earwax and other debris to ensure lasting quality and clarity. The in-ear design and assortment of noise-isolating ACCU·Fit eartips provide a proper seal in the ear canal to reduce outside noise by 35-42dB. A CUSTOM·FIT option is also available that allows you to purchase custom-made eartips that are specifically designed for your ears.