MI0190B Features Superb stereo sound quality Suitable for all mobile devices with 3.5mm interface Easily switch between move next / move of music Built-in microphone， perfect for answer and dial calls Pressure-free ear tips come in three sizes for the optional fit  General Specs Type In-ear earphones Connector 3.5 mm audio jack Compatibility Android and iOS devices and other digital devices with 3.5 mm jack Speaker Drive Φ10mm Sensitivity 90±3dB Impedance  16Ω±15% Frequency Response 20-20KHz Cable Length 1.2m Plug Type Φ3.5mm Stereo Package Details Weight: 107.00 g Size: 21.5*10.5*3.5 cm