1.Drive Unit : 40mm
2.Frequency range :20HZ---20Khz
3.Impedance :32
4.Sensitivity:118dB±5dB S.P.L at 1 kHZ
5.Distortion <=1%
6.Rated Power :20mW
7.Maximum Power :50mW
8.Microphone Sensitivity :-58+-3dB
9.Cord length: 2.0±0.3m
10.Plug :3.5mm