• Speaker Impedance : 320 • Speaker Sensitivity : 120±3dB • Speaker Frequency Response : 20-20000HZ • Maximum Povver Input : 30mW • Microphone Size : 9.7x4.5mm • Microphone Sensitivity -54dB±3dB • Microphone Frequency Response 20-16000Hz • Microphone Operating Voltage 4.5V • Microphone Impedance *2.2K •SNR . >58 Db • Cord Length :2.2m
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