... earphone for iphone,MP3,MP4,PC 1,CE, FCC ,RoHS compliant 2,OEM & ODM 3,Top ... . Powerful magnet systems and lightweight diaphragm to provide high-quality sound7. Powerful bass ... Advantages&Selling Point · Powerful neodymium magnets for stereo sound with outstanding bass performance· Closed on ... even for extended use· Optimised for portable audio including MP3, CD players, iPad, iPod and iPhone. ...