Compatible for use as clone cards with Switch, U and new systems. Built with high quality & durable waterproof PVC material,each NFC card with opp bag individual packing. Blank white both side - printable by most photo ID card printers like , , , , , Nisca, NBS & etc. NOT use for inkjet printers. 504 bytes usable memory, programmable with all NFC-enabled smartphones or devices. Note: Some Models can not support reading the NFC cards, so it can not recognizes the NFC cards, it is not cards problem,please understand it clearly before your buying. Colour:White Material:PVC Size:One piece about 85.5*5.4mm Package Contents: 30*NFC Cards Only the above package content, other products are not included. Note: Light 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.