Maxell Plugs Mic InEar Buds
Built-in Mic
TRS .35mm Mini-stereo
Sound isolation
Clear calls
Driver : 10mm
Impedance : 16 ohms +/- 15%
Sensitivity : 94dB +/- 3dB
Frequency Response : 20-23KHz
Microphone  Sensitivity : -40 +/- 3dB
Frequency Range : 30 – 16Khz
Operating Voltage : 2~10V D2~10V
Current Consumption : <500uA