Driver Diameter: 45 mm Magnet: Neodymium Frequency Response: 15 - 28,000 Hz Maximum Input: 1,600 mW at - kHz Sensitivity: 99 dB Impedance: 38 ohms Weight: 10 oz (284 g) without cable and connector Cable: 1.2 - 3.0 - (3.9' - 9.8') Coiled, OFC litz wire Connector: Gold-plated stereo 1/8" (3.5 mm) connector with strain relief and professional screw-on 1/4" (6.3 mm) adapter