Product Details  We specialize in mobile phone accessories. Such as mobile phone earphone. Good quality and competitive price Earphone Features:  1) With MIC switch used for stereo earphone to enjoy great music 2) External design: different colors available 3) With volume control available 4) High sensitive condenser electric microphone 5) Compatible with various kinds of mobile phones Specifications:  1) Frequency response: 20Hz - 20kHz 2) Impedance: 32 ohms 3) Sensitivity: 105±5dB 4) Max. input power: 10mW Inner packing:  Polybag or customized Outer packing:  Carton