In-ear 10mm high definition headphones with passive noise isolation. Features crisp highs, balanced mids and tuned for enhanced bass; Works with iPhone, iPod, MP3, CD, DVD, PSP and computers; Wooden housing for crisp, accurate music reproduction; Passive noise cancellation minimizes ambient sounds; Ultra lightweight design with PVC-free, tangle-resistant cable; Dynamic driver features 20Hz to 20kHz frequency response; 3.5mm gold plated plug for increased sound clarity; Four sized flexible silicon ear inserts for secure fit (s/m/l/xl); Cord clip and cotton carrying pouch included.