Type of ConstructionClosed Type; DynamicDriver40 mm in diameter;Neodymium MagnetSensitivity100 dB/mWMaximum Input Power1,600 mW at 1 kHzFrequency Response20 - 20,000 HzImpedance65 ohmCable3.4 m, coiled cableConnector1/8" stereo mini-plug (w/ screw-on 1/4" adapter)Size and WeightWeight0.2 kg0 lbs. 8 oz.Weight (without cord)* 0 dBu=0.775 Vrms*The specifications are subject to change without notice.