13.56 MHz UID Writable Rewritable Clone IC Smart Keychain, RFID Blank Sticker for Access Control Key Sticker Rewritable Compatible with MIFARE Classic 1K (2 PCS)

This card works the same as normal M1 cards. Works exactly like the MF S50, with 16 Sectors and 4 Blocks each Sector, but the Sector 0 Block Zero can be writable. It's advantage This is a perfect solution for a lost irreplaceable M1 Cards ID, you don't need to re-enroll new cards. Just program this new MF 1K's UID to the UID of lost card then you have a new Exactly the same card. User definable access conditions & password for each memory block Organized in 16 sector with 4 blocks of 16 bytes each (one block consists of 16 byte) Specifications Protocol: ISO14443A Capacity: 1k bytes EEPROM memory Rewrite Times: 100,000 times Read Distance: 0 ~ 10 cm(depends on the R/W device) Material: PVC Application Loyalty Ticketing Identification Access Control Package Include 10pcs X UID Rewritable IC Tag