Logitech Ultimate Ears 700 Noise-Isolating Earphones - Dark Silver (Discontinued by Manufacturer) Features - Two custom-tuned drivers per ear - You get clean, detailed sound; one driver produces rich low tones, while the second speaker delivers clear mid and high notes Immersive sound signature - 3D sound makes you feel as though you are experiencing the quality, energy and emotion of a live performance Sleek, micro design - These tiny, lightweight earphones virtually disappear when inserted into your ear; all you see is a small silver housing Flexible wearing - Wear your earphones down for casual listening or over the ears while exercising or when more active