Meters M-OV-1TAN TECHNICAL SPECIFICATIONS TYPE: Closed, Dynamic, ANC BACKGROUND NOISE REDUCTION: 83% ACOUSTIC DRIVER: 40mm dome ANC mic IMPEDANCE: 32 Ohms @ 1KHz FREQUENCY RESPONSE: 20 Hz-20 kHz SENSITIVITY: 94db/mW MIC SENSITIVITY: -60 +/-4db CORD: 4 ft. Straight Cord PLUG: 3.5mm Stereo Gold-Plated WEIGHT: 380g (0,8Lbs)