Wide Dynamic Sound..Comfortable Long Listening..These full-size headphones from JVC deliver amazing sound and comfort. They have 50mm Neodymium driver units and two types of superior sound structure for high-quality, dynamic sound. Plus, the adjustable, wide head pad and soft earpads deliver optimum comfort.Features:High-quality dynamic sound reproduction with Neodymium driver units & 2 types of sound structure.Ring port structure provides high-quality dynamic sound.Reproduces natural sound through 2 pieces of specially engineered acoustic lenses.Acoustic lenses tune direct and indirect sound by subtly offsetting holes in each lens.Wide head pad and soft earpads for optimum comfort.11.48-foot (3.5m) pure cooper cord for minimization of transmission loss with gold-plated plug.6.3mm plug adapter included.Specifications:Frequency response: 7Hz - 26,000Hz.Sensitivity; 106dB/1mW.Norminal impedence: 64ohm.Cord length: 3.5m(11.48ft). FIND OUT MORE @ http://bargainwarehouse.org.uk/products/2436-jvc-premium-audio-stereo-headphones-ha-rx900