speaker:Φ50mm
impedance:32Ω  ±15% 
Frequency Response: 20Hz-20 kHz 
Cable Length:2.1M 
rated power:25mw
max input power:40mw
plug type:Φ3.5mm*2+USB
mic dimension:Φ6.0*5.0mm
directivity:noise canceling
sensitivity:115db±3db