Designed with the same high-quality as their speakers, Edifier has created an affordable earphone that will leave you speechless. At a low cost, they still produce high quality sound with a strong bass. You'll forget you're listening to music on your earphones and not a speaker. Designed with a copper-clad aluminum wire for a lighter feel, the H180 earphone is one of the best offerings of classic earphones from Edifier with a easy to fit form factor and modern style. The H180 classic earbud style earphones are known to have a sound signature that's comparable to professional headphones that's several times higher than its price tag. The H180 produces a well balanced life-like sound that's not overemphasized nor lack in any frequency band. Wide dynamic range. Excellent bass response. Highest quality entry-level wired in-ear earphones. Comfortable ergonomic fit. Frequency Response : 20Hz~20KHz Impedance : 32? Rated input power : 10mW Sound Pressure Level (SPL) : 100dB Connector : 3.5mm stereo Cable Length : 1.2m What's in the box H180 Earphone, User manual