... material:high plasticPVC material12.CE/RoHS certifiedQuestions: 1:What is the raw material of your skull earphone ,the ... or metal ?For this earphone ,it is plastic . 2:What kind of earpads silincone can you provide ... ?For our metal earphone ,the most character is that bass sound are very strong ,once you ... another Mobilphone ?Yes,of course ,the difference is jack ,different jack can decide to work with ...