I-chip：NXP SmartMX P5CD012 Cards size：85.5×54×0.84mm, or customer specified size Induction distance：2cm-10cm Materials：PVC/PET/PETG/ABS/Paper, 0.13 copper wire EEPROM: 12KB Endurance: > 500,000 times Data retention time: > 25 years Ambient temperature: -25℃~+85℃ CIU fully compatible with ISO/IEC 14443A 13.56 MHz operating frequency fully supports the T=CL protocol in accordance with ISO/IEC 14443-4 supported data transfer rates: 106kbit / s, 212kbit / s, 424 kbit/s and 848kbit/s …