Crafted and tuned by same engineers who build our pro earphones for recording artists and sound engineers, the Logitech UE 900s feature a unique quad-armature design-two for the low end, one for the mid-range, and one for high frequencies. The result is nothing short of a revelation in music listening - a wide, front-row-center soundstage, take-your-breath-away depth and clarity, piano-like timbre, and just the right amount of color on the bass and treble. The Logitech UE 900s come with two detachable, braided cables. The mic and on-cord controls let you answer calls with just one touch, change tracks and adjust volume-all without touching your iPhone® or iPod®. A second standard cable is included for those who need to listen to music and nothing else. When it comes to noise isolation - and great sound - fit matters. So, for maximum comfort and up to 26 dBs of noise isolation, the Logitech UE 900s come with eight pairs of specially designed ear cushions. Choose from five sizes of silicon cushions and three sizes of Comply® foam cushions, each designed with a large-bore opening to ensure the sound is delivered cleanly. Because nothing should come between you and the music you live for.