Manufacturer : LEXI. Each card without a unique ID number 3. Suitable for 13.56MHz card reader and reading distance is 0-10cm. Read, Writable and Rewrite. Waterproof 7. Can copy write mi-fare 1k key card Read and write: Due to its 1K chip, these RFID cards are both readable and rewritable, allowing for multiple uses. ID card/attendance system/access control system/hotel/parking lot/transportation card/student card/shopping card, etc. Enjoy reliable and customizable access control with these high-quality RFID cards., 13., 56MHz RFID cards: These RFID smart cards operate at the standard frequency of 13., 56MHz to achieve maximum compatibility with security and access control systems. Key Fob Rfid HFeng 13.56MHz UID Removable Keyfobs Token MF 1k NFC Tag Rewritable RFID Writable Access Control Key Card Used To Copy/Clone The Card (50PCS 1K IC Cards This card works the same as normal M1 cards. Works exactly like the MF1 S50, with 16 Sectors and 4 Blocks each Sector, but the Sector 0 Block Zero can be writable Durable PVC material: Made of sturdy PVC, these cards are durable and meet the ISO14443A standard. Its sturdy and durable design makes it very suitable for daily use in offices, commercial buildings, or schools. 4Pcs NFC Tags Stickers UID RFID Label 13.56MHz Rewritable Back Adhesive Secure input system: These RFID cards are highly suitable for access control and security systems, as their chip technology provides a high level of security.