The Audio Technica ATH-WM5 is a portable retractable headphone designed to deliver Audio-Technicas famous sonic clarity. A change in venue from other Technica portable headphones, the ATH-WM5 features an auto-rewinding cord for tangle-free storage, a closed-back design for isolation from ambient noise, and a specially designed 30 mm driver meant to project crystal clear sound. The ATH-WM5 also trumps many Technica competitors (such as the EC700, EM7 GM, EM9r) by offering a 30 mm Neodymium driver (versus 28 mm) and improved maximum input power of 500 mW (versus 100 mW). In addition, the ATH-WM5 includes foldable housing for compact storage and maximum portability, not to mention a gold-plated mini-plug for exceptional corrosion resistance and superb conductivity