Headphone
Speaker Dimension : 40mm
Frequency : 20-20,000Hz
Sensitivity : 103dB S.P.L at 1KHz
Impedance : 32Ω
Rated Power : 15mW
Power Capability : 150mW
MIC
Dimension : 6x5mm
Microphone Unit   : 30-15,000Hz
Sensitivity : -58dB±3dB
Microphone Sensitivity : -58dB±3dB
Power Capability   :   3v