Protocol standard: ISO 15693/18000-3 Mode 1 Working frequency: 13.56MHz±7kHz 2048-bits EEPROM with Block Lock feature 64-bit unique identifier (UID) Reading distance: up to 1.5M Working temperature: -20℃~+65℃ Erase/Write cycles: 1,000,000 times (minimum) Data retention: 40 years (minimum) Size: ISO standard card L 85.6×W 54×T 0.84(±0.4)mm Material: PVC/ABS/PET/PETG, 0.13mm copper wire Encapsulation process: automatic ultrasonic automatic plant line/touch welding