They do function (as seen in video) but they are damaged. The cord is twisted out of shape. The material for the earmuffs and head band is disintegrating to the touch it is falling off everywhere. A lot of the material is already missing. And just from me wrapping them more may go missing than what's shown. The material is cracked and falling off. You will receive exactly what you see. Sold as is with no returns. Thanks for looking