All Product Industrial(Hk) Holdings Limited-Victory Electronics Ltd  

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Driver Unit: Diameter 30 6u
Speaker Impedance: 32ohm+/-15%
Speaker Sensitivity: 100dB+/-3dB
Speaker Frequency Response: 20-20, 000Hz
Maximum Power Input: 30mw
Microphone unit: 6*2.7mm
Microphone sensitivity: -58dB+/-2dB
Microphone Frequency: 20Hz-16KHz
Tie-in: USB type