Styled in black, the Beoplay H9i Over-Ear Headphones from B&O PLAY by Bang & Olufsen sport Bluetooth and active noise cancellation. Four dedicated electret microphones have been built into the earcups for the specific purpose of measuring and canceling out the din around you. Thanks to the elegance of their design and the materials of their construction (anodized aluminum, lambskin, and cowhide leather), these headphones boast a sleek look and a comfortable fit.