• Microphone Bi-directional• Driver Driver Diameter : 50 mm Driver Material : Neodymium magnet• Sensitivity Headphone Sensitivity : 100 dB Microphone Sensitivity : -30 dB• Maximum Input 50 mW• Frequency Response Headphone : 20 ~ 20000 Hz• Impedance 32 Ohm ± 3 %• Cable Length 2.5 meter• Noise Cancelling Performance Passive (noise isolation) : Maximum > 30 dB• Weight 268 g