● mobile phones - Support for smartphone calls. - Wire call answer / end button. - Fast switching music / phone model. - Noise canceling soft silicone earplugs， obedient comfortable and effective noise isolation. ● music - High quality metal materials to build， better sound quality. - Color flat line design， easy to tie curly， incorporating super convenient. - Configure advanced monomer， with clear sound shocking. -3.5mm Stereo connector for connecting mobile phones / tablets / MP3 / computer / radio use.