Ultimate Ears 600 Noise-Isolating Earphones produce extended high-frequency response and a fuller soundstage, so you feel as though you are experiencing the quality, energy and emotion of a live performance. They can be worn straight down or over the ear, so you get a secure fit whether you're running errands or running at the gym. The noise-isolating design reduces outside noise by 26 dBs and lets you focus on the music. With seven sizes of ear cushions, you know you'll get the right fit. And a pocket-ready hard case keeps your earphones sounding their best.