Specifications Acoustic Principle: Line GradientPolar Pattern: Super-cadioid Frequency Response: 40-20, 000Hz Sensitivity: -32dB +/- 3dB 1KHz Signal to Noise Ratio: 80dB Connector: One 3. 5mm Trs Dynamic Range: 120dB Output Impedance: 200 Ohms Power: Two Aa Batteries (not included) Average Run-time: 120 Hours Audio Level Switch: -10dB, 0dB, +10dB High-Pass Filter: Flat, 80Hz Construction: Abs Dimensions: 8. 2 x 4 x 2: (209x103x50mm) Weight: 4. 7oz (132g)