Skull earphone for iphone,MP3,MP4,PC 1,CE, FCC ,RoHS ... comfortable fit even for extended use· Optimised for portable audio including MP3, CD players, iPad, iPod and iPhone. Specification Drive ... unit 9.2mm Impedance32ohmSensitivity-100dBmFrequence range 20-2khzFunctionstereoWiresTPE cableUsageIpod,Ipone,MP3,MP5,CertificateCE,Rohs,FCC skull earphone for iphone ...