Technical data: Microphone 1.Type: Electret Condenser 2.Frequency range:100HZ-16000HZ 3.Sensitivity:-35dB±2dB(0dB=1V/Pa) or -55dB±2dB(0dBV=1V/μ bar) 4.Supply voltage: 4.5V 5.S/N: >60dB 6.Impedance: 2.2KΩ 7.Currency consumption:≤0.5mA System 1.Cable length:Approx. m 2.Jack plug:Φ mm stereo 3.Net weight(W/O cable):Approx. g Description 1.Specialty conference microphones; 2.Ideal for use of conference,Karaok TV,etc.