MI0156W Features Superb bass stereo sound effect In-ear design keeps noise out Built-in microphone for hands-free calling Universal 3.5 mm plug Durable 1.2 m knitted cable General Specs Brand & Model Langston Sound Bass stereo sound Earphone Type In-ear earphones Microphone Yes Volume Control N/A Impedance 16 ohms Frequency Response 20Hz-20kHz Sensitivity 106dB Connector 3.5 mm audio jack Cable Length 1.2 m Compatibility Samsung， Xiaomi， iPhone and other smartphones with a 3.5 mm audio jack Package Details Weight: 57.78 g Size: 16.7*10.5*2 cm