Stereo MP3 earphone 3.5mm DC plug Metallic, High quality CE, FCC and ROHS certificate KA-190 In ear Stereo MP3 Earphone:Speaker: 10mm 6U32R, Case: MetalImpedance: 32 OhmsSensitivity: 95dBFrequency response: 20Hz-20K HzPlug: 3.5mmCable: 1428 cable, lenght: 1.2m Stereo MP3 Earphone for promotion or gift propose