Type Closed-back dynamic Driver Diameter 45 mm Magnet Neodymium Voice Coil CCAW (Copper-clad aluminum wire) Frequency Response 15 - 28,000 Hz Maximum Input Power 1,600 mW at 1 kHz Sensitivity 99 dB Impedance 38 ohms Weight 285 g (10 oz), without cable and connector Cable Interchangeable cables: detachable 1.2 m - 3.0 m (3.9' - 9.8') coiled cable, detachable 3.0 m (9.8') straight cable and detachable 1.2 m (3.9') straight cable Accessories Included Protective carrying pouch, 6.3 mm (1/4") screw-on adapter