Support read, write and reprogram, over 100000 rewrite times. Can clone 13.56MHz IC card, NFC stickers, NOT compatible with 125KHz keys cards. Fully compatible to MI- Classic 1K,4- UID, 1024 bytes memory, organized in 16 sectors of 4 blocks, compliant to /IEC 14443A protocal. Compatible with all kinds of 13.56MHz RFID writers and door access control system devices. Water resistant. Each comes with Key ring included. Each card with a unique encrypted ID number, card data can be reprogrammed. Colour:blue Material:ABS Package Contents: 100 x card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.