Transducer: Electret Condenser Polar Pattern: Omni-directional Frequency Range: 65Hz-18KHz Signal/Noise: 74dB SPL Sensitivity: -30dB +/-3dB/0dB-1 V/Pa, 1KHz Output Impedance: 1000 Ohm or less Connector: 3.5 mm (1/8") 4-pole gold plug Power requirement: LR44 (included) Cable length: 4m(13ft) Net weight: 68g(2.4 oz)