Superlux HD651HD651Circumaural Closed-Back HeadphonesHD651 presents accurate and rich bass, and excellent vocal sound.These closed-back headphones combine excellent sound with optimum price/performance and it is the bestpractical choice for a music lover and artist. The patent self-adjusting headpad construction, soft, circumaural leatherette ear pads, and low weight ensure a perfect fit. Powerful 40 mm (1.6 in.) speakers provide a superbly natural, uncolored sound. When you arelistening to an MP3, you can expect comfort and sonic accuracy from your HD651 headphones.HD651 comes multicolor options and allow you to pick up one of your favorite color following your feel.• Dynamic, closed-back design• Accurate and rich bass, and excellent vocal sound• 40 mm speaker driver• High-energy neodymium magnet• Excellent price/performance• Multicolor available• Patented self-adjusting soft rubber headpad constructionA: Auto ?ne-tuned self-adjusting ear cup structureB: Patented self-adjusting soft rubber headpadHD651 comes multicolor options: purple, red, black, grey, white, yellow,green, and more.Applications• Music Appreciation• Entertainment Type: Dynamic, closed-backDriver: F40mm, neodymiumSensitivity: 98dB SPL (1mW)Frequency Response: 20-20,000HzMax. Input Power: 200mWRated Impedance: 32OTotal Harmonic Distortion: Ear pads: LeatheretteCable: 2-meter (6.6 ft.)Connector: Stereo mini plugHeadphone Caliper Pressure: Approx. 4.5NNet Weight: 185g(6.5 oz)