Product specifications Chip type: low-frequency Memory capacity (bits): 512bits Material: ABS Working frequency: low-frequency 134.2KHZ Working distance: greater than 2cm (related to the configuration of reading and writing devices) Working temperature: -25 ℃~+70 ℃ Compliant with standard: ISO11784/785 (FDX-B, HDX) Chemical resistance: Comply with IP67 standard, waterproof, sunscreen, and anti soaking