◆Speaker Dimension: Φ23±0.5mm
◆Speaker Impedance: 32Ω±15%
◆Speaker Frequency Respond: 20-20KHz
◆Speaker Sensitivity: 91dB±3dB
◆Microphone Dimension: Φ9.7*6.7mm
◆Microphone Impedance: 2.2KΩ
◆Microphone Frequency Respond: 20-16KHz
◆Microphone Sensitivity: -36dB±3 dB