Head Phone with Mic (Intex)
•Microphone-electret Condenser Type
•Directivity: Omni-directional
•Sensitivity: -54dB+/-3dB
•Frequency response: 20-20000Hz
•Cord length: 1.8m
•Connector: 3.5mm stereo MIC-plug
•Standard operating voltage: +3VDC
•S/N ratio:40 dB or more