Koss QZ/999 Noise Reduction Stereophones

Features Frequency Response: 40-20, 000 Hz Passive Noise Reduction stereophone system Ideal for use with racing scanners and metal detectors Volume control on earcup for easy level adjustment Stereo/Mono switch for added flexibility Single-entry, 8-ft coiled cord Impedance: 60 ohms Weight: 15 oz Sensitivity: 102 dB SPL/1mW Distortion: .3% Cord: coiled, single entry, 8 ft Plug: 3.5 mm/6.4 mm