The CX 475 hits the streets with the premium style, flair and sound quality you expect from Sennheiser. Hitting hard without sacrificing detail or treble response, the CX 475 packs massive bass response in a compact size. So compact that it AND an iPod Nano can fit in the included pouch to prevent tangles.The unique combination of ear-plug and hi-fidelity speaker combat noise pollution so you can listen at a safer level and hear the best solo's, hardest beats and incredible sound effects.The ultra-wide frequency response covers the entire range of human hearing to ensure that you take in as much music as you humanly can. Step up to the CX 475 and step into the music experience only Sennheiser can provide.