Type: Over the Ear Frequency Response: 80Hz-20KHz THD: Input Impedance: 32 ohms Sensitivity: 94dB S.P.L. at 1KHz Cord Length: 4 ft. Features: The Recovery is equipped with dynamic elements for an extended frequency response. It features an over-the-head design with contemporary styling, and folds flat for easy storage. Perfect for use with portable mp3 players or ipods, it includes a straight single-entry four-foot cord with an inline volume control. A 3.5mm (1/8") plug is included.