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 Model Number: TE-R3207-I Technical Specifications: Speaker OD: Φ15mm Resistance: 64Ohm±15% at 1000Hz Sound Pressure Level: 89dB±3dB at 1000Hz Rated Power: 100mW Max Power: 20mW   Microphone Type: Electret microphone Sensitivity: -40dB±3dB at 1000Hz (0dB=1V/Pa) Resistance: 2.2KOhm       |