RFID chip: TK4100, TK4001, T5557, T5577, EM4100, EM4305, TI, Mifare 1k S50, Mifare 4k S70, Icode2, UtraLight, FM11RF08, Alien H3,etc Size: Φ14/20mm/25mm/30mm, thickness 0.35~4mm (Or the designated size ) Memory: 64bits/330bits/1kbyte Working frequency: 125KHz/134.2KHz/13.56MHz/860~960MHz Communication protocol: ISO18000-2, ISO11784，FDX-B，ISO11785, ISO14443A, ISO15693, ISO 18000-6C/6B R/W distance: 2~10cm, UHF coin tag read distance 10~100cm R/W time: 1~2ms Working temperature: -20℃~+85℃ Erasable times: >100,000 …