【Origin-Joy NFC Cards】Built-in NTAG215 chip, 504 bytes storage, follow the protocol ISO/IEC 14443A. With read/write lock funtion, the read/write time is 1-2 ms, data stored more than 10 years, 100000 times of erase and rewrite. 【Homemade Game Cards】Compatible with Amiibo, TagMo, Nintendo Switch, iOS & Android phones and devices. And Daily using for authentication purposes, access control, information query, etc. 【Waterproof】The outer layer is made of waterproof plastic, no hole, no scratches, no loss of performance due to surface exposure to water. 【Durable & Crash-Proof Packaging】Comes with a rigid dust-free PP plastic box to prevent bending, scratching, or chip damage during shipping. While being reusable for everyday storage. 【Package Contents】100 pcs 85.5 x 54mm black blank NTAG215 cards. Programmable, rewritable and surface printable. 【Friendly Reminder】NFC cards are rewritable, but can't be edited or reset after setting as read-only. For Amiibo, it can only edit once. And this type of NFC card is not suitable for metal surface. Origin-Joy 100 PCS NFC Cards, NTAG215 Blank Waterproof 85.5 x 54mm NFT Chips, Programmable & Rewritable, Compatible with Amiibo, TagMo, iOS & Android Devices (Black)