3.5mm Stereo Jack Plug Mono Car Audio Microphone Pc Mic With 1m Mini Wired External Microphone

characteristics: cork: 3.5mm stereo mono jack cable length: 1 million. sensitivity: - 20db + - 2db (0db = 1upa) internal resistance (max): 2.2k ohm omnidirectional directions: frequency range: 50hz-20khz Operating temperatures: - 20 ~ + 60 degrees Storage temperature: -30 ~ + 70degree