... timely after-sales serviceFactory Direct,OEM.earphones used for MP3,MP4,CD,Iphone,computerProduct sepecifications:1.style:Skull2.speaker dimension:10Φmm3 ... three different size ,large size ,Middl size and small size .For the color ,black ,white,transparent white ,grey ,transparent grey ... ,Man,can you make your earphone to work with Ipod,Iphone and another Mobilphone ?Yes,of course ,the difference is ...