We can do oem for mobile phone earphone,mp3,ipod earphones and so on. Speaker technical index:* Impedance: 32±15%Ω* Sensitivity: 110±4dB at 1kHz 179mV* Frequency response: 20Hz~20kHz* Normal input power: 3mWMicrophone technical index:* Impedance: 2.2kΩ at 1kHz* Sensitivity: -40±4dB at 1kHz* Frequency response: 300Hz~5kHz* Current attenuate: <0.5mA* Noise rating: >58dB Mobile phone earphone
[China Manufacturers]