1. Speaker size: 50MM2.MIC size: ?4*1.5mm3. Rated impedance: 20??15%4.MIC current: ?0.3mA5. Speaker sensitivity: 103?3dB at 1KHz; 1mW6.MIC sensitivity: 42dB?37. Rated power: 10mW8. Maximum power: 20mW9. Frequency range: 20~20KHz10. Packing size: 235*195*111mm Weight: 2378g”
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