Drive type = Diaphram Driver size = 40mm Frequency Response = 20Hz - 20KHz Impedence = 32± 15% @ 1KHz Sound Pressure Level = 103± 3dB @ 1KHz THD = Max 3% Number of Drivers = 2 Number of microphones = 1 Earcups match the natural ear shape for enhanced fit and sound isolation Low-mass titanium...