OLYMPUS ME-51S Stereo Microphone Specifications: Type: Stereo electrets condenser microphone Plug: 3.5mm stereo Frequency Response: 100 – 15,000 Hz Directivity: Uni-directional x 2 Mike Sensitivity: -40db at 1 kHz Output Impedance: 2.2kOhms Power Supply: Plug-in-power system (1.5V - 10V) Color: Silver and Black microphone Dimensions: 1.5 x 0.55 x 1.57 Weight: 0.25 oz. main unit, 0.63 oz. including extension cable and tiepin clip Parts: 1 year limited Labor: 1 year limited