Listen to tunes all day with these Audio-Technica in-ear headphones. The sturdy, pure-titanium housings decrease unwanted resonance, while the 15.4mm HD drivers with a permendur magnetic circuit deliver Hi-Res sound reproduction. These Audio-Technica in-ear headphones have diamond-like carbon coating on the diaphragms for full-range audio delivery and include two 3.9-foot detachable cables.