The Beyerdynamic Dt 990 Pro is an open dynamic headphone of exceptional quality suitable for the most demanding professional and audiophile applications. This set contains Carrying Bag, Stereo Jack Plug (3.5 mm), 1/4-inch Adapter (6.35 mm), Knox Gear Nylon Braided 3.5mm Male to Female Stereo Audio Extension Adapter Cable (6-Feet), and Knox Gear 1-Year Warranty.