Audio Driver Unit : 13.5 mm, dome type Frequency Response : 12 – 22,000 Hz Impedance : 16 ohms at 1 kHz Sensitivity (db) : 104 dB/mW General Design : In-the-ear Headband : None Magnet : Neodymium Plug : Gold-plated L-shaped stereo mini Type of Use : Portable Weights and Measurements Cord Length (Approx.) : 47 1/4 in. (1.2 m), Litz cord Y-type Weight (Approx.) : 0.22 oz. (6 g) without cord Hardware Cord : Connecting cord 3.9 ft (1.2 m)