DE202 good quality earphone-earset for MP3,MP4, Iphone 1.Frequency:10-24KHz 2.Plug type :3.5mm stereo ... lengthaaApprox Impedance DE202 good quality earphone-earset for MP3,MP4, Iphone Specification Frequency10-24KHzSensitivity103db±3dbImpedance32ΩMax input power20mWCord lengthApprox 1.2MPlug ... global consumers. DE202 good quality earphone-earset for MP3,MP4, Iphone