MI0180B Features Superb sound quality Stylish printing smile face design Suitable for all mobile devices with 3.5mm interface Easily switch between music and phone calls with one click Built-in microphone， perfect for hands-free 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 100±3dB Impedance  16Ω±15% Frequency Response 20-20KHz Max.Rated Power 15mW Cable Length 1.2m Plug Type Φ3.5mm Stereo Microphone Sensitivity Minus 42±3dB Package Details Weight: 69.55 g Size: 18*12*4.5 cm