※Please only purchase if you understand the intended use and are able to search for information. ~Specifications~ ・Standard: 1K S50 ・Chip: ISO-14443A NXP-Mifare Classic 1k ・Operating Frequency: 13.56 MHz ・Capacity: 1024 bytes (Actual writable capacity is 716 bytes) ・Size: 41 x 32mm *Tag body only ・Weight: 4g This is a set of 3, and the colors will be random. ※Mifare Classic standard. Please check if your intended use is compatible. Shipped via Yu-Packet Post Mini.