Features: 1) Mic type: 9mm x 7mm 2) Impedance: maximum2.2k 3) Sensitivity: -58dB ?2dB (0dB=1V/pa) 4) Directivity: omnidirectional 5) S/N ratio: more than 60dB 6) Sensitivity reduction: within-3dB at 1.5V 7) Mic frequency range: 30Hz-16,000Hz 8) Speaker: 40mm 9) Sensitivity: 108dB S.P.L at 1kHz 10) Spk frequency response: 20Hz - 20,000Hz 11) Impedance: 32 12) Rated power: 100mV 13) Power capability: 1000mV 14) Cord length: about 2.5m 15) Plug type: 3.5mm stereo