Product DescriptionRFID KeyfobMaterialAntenna materialAluminium foilChipOriginal RFID chipsSurface materialPET,Website:http://www.topsmartcard.com,Paper,EPOXY .Chip AvailableNTAG203,NTAG213, NTAG215, NTAG216, ICODE SLI, TOPAZ512, TK4100, EM4200, T5577 ETC.RFID ParametersFrequency13.56Mhz /125KHzProtocolISO14443A/ ISO15693/ ISO7815Operation distance1~10cm(depend on reader)User memorydepends on chip ...