Type: Behind the Neck Part: 190329 Driver Unit: 12mm Frequency Response: 20Hz-22KHz Input Impedance: 32 ohms Sensitivity: 102 dB Cord Length: 4 ft. Features: Magnet: Neodymium Rated Input: 1 mW Maximum Input: 5 mW Ideal for portable CD/DVD/Mp3/iPod players Soft silicone tips for extended wear and comfort Lightweight behind the head design