Multimedia headphone Speaker Speaker:40mm Dynamic type Impedance:32 Ohms Sensitivity:105dB+/-4dB Frequency:50Hz-20KHz Max.Input power:100Mw Microphone Microphone:Condenser type Palar pattern:Omni-directional Sensitivity:-58dB+/-3dB Frequency:50Hz-16KHz Cord length:1.8m+/-3% Connector:3.5mm stereo plugx2