Audionic Companion SD-670 Headphones

Speaker: 30mm 
Impedance: 32 Ohms
Frequency Response: 20Hz-20000Hz
Cable Length:  Approx. 2.2m
Rated power:  25mw  
Max Input Power: 50mw
MIC dimension:  6.0 x 5.0 mm
Directivity:  Noise cancelling
Sensitivity: -55dB+/-2dB