JVC HARX900E Full-Size Premium Stereo Headphones The JVC HARX900 provides high-quality dynamic sound reproduction with a 50mm Neodymium driver unit and two types of superior sound structure. Features: High-quality dynamic sound reproduction with 50mm Neodymium driver unit and two types of superior sound structure Ring port structure provides high-quality dynamic sound Acoustic lens structure reproduces natural sound through two pieces of specially-engineered acoustic lenses Acoustic lenses (located in front of diaghragm) tune direct and indirect sound by subtly offsetting holes in each lenses Wide head pad and soft ear pads for optimum comfort Pressure dispersion mesh head pad for comfortable long listening