MT0187B Features In-ear stereo & bass sound earphones Convenient 1.85 meter cable Equipped with microphone for hands-free calling 3.5mm audio jack General Specs Brand & Model KEENION KDM-E003 Sound Stereo sound Earphone Type Wired headset Impedance  32 ohms Frequency Response 10-28000Hz Microphone 6x5mm/-48dB±2dB Sensitivity 116±3dB Connector 3.5mm audio jack Cable Length 1.85 m Compatibility iPhone Package Details Weight: 72.76 g Size: 20.00*9.00*3.8 cm Package Includes * KEENION KDM-E003 In-ear Stereo Sound Wired Earphones with Microphone for 3.5mm Cell Phones