NEW Edutige Eim-001 Microphone Recording for Iphone， Macbook， Galaxy Tab superior sound quality flat frequency response exeremely low handling noise small & compact design Product Description Type Electret Condenser Directivity Omni-Directional (360?) Sensitivity -22dB (1kHz at 1Pa) Frequency Response 50 -18，000Hz Plug 3.5mm 4-Pole Size 19mm X 9mm (without plug) Weights 6.1g Power Source Plug-in power capability Operating Temperature 0℃ ~ 40℃ (32? ~ 104?)