MI0136W Features Stereo sound effect 3.5 mm in-ear design Built-in microphone Comes with a 1.2 m cable General Specs Brand & Model LANGSTON JM-12   Sound Stereo   Microphone Yes Impedance  32ohm Sensitivity 110dB/V Max. Input Power 19mW Frequency Response 13Hz-22.5KHz Connector 3.5 mm audio jack Cable Length 1.2 m Compatibility Nokia， ZTE， HUAWEI and other 3.5 mm audio jack devices Package Details Weight: 27.82 g Size: 18.5*7*2 cm