... : 1.RFID card is different chip inside. 2. Original chip and best quality RFID card is different chip inside, for example UHF, proximity ... , etcShapes: ISO card, disk tag, wristband, keychain/keyfob, laundry tag, metal tagTagIC: R/O, R/WChips: EM4102, T5567, Mifare 1K, Mifare ... .04mmmaterial :PVC.PET High quality 125Khz contactless EM4100 card(Original chip)