Characteristics 1. The NTAG215 with a diameter of 25mm / 1 inch. 2. High-quality material: The NFC card is made of waterproof PVC, with a smooth surface and writable. Waterproof, acid-resistant, alkali-resistant. 3. Compatibility: No matter whether you use them together with TagMo Amibo or your NFC phone, these cards are guaranteed to work seamlessly. These cards are also rewritable, meaning you can repeatedly use them to store different data and information (Amibo can only be edited once and cannot be reused). 4. NFC blank tags use the NTAG215 chip with approximately 492-504 bytes of memory, which can be read and written more than 100,000 times. 5. Further applications: You can use NFC stickers to create Amibo cards. You can obtain any weapon, pet, mount or fashionable item you want. Quickly share your social information, music, connect with WF, create smart homes, and more! Parameters: Chip: Ntag215 Coin diameter: 25mm / 1.02 inches (approx.) Frequency: 13.56 MHz Protocol: ISO/IEC 14443 A Memory: ≈ 492-504 bytes User memory: ≈ 492-504 bytes Material: PET Operating temperature: -40°C to +85°C Package includes: 10/20/50 Ntag215 coin cards (optional) Note: NFC cards are mainly used for storing information (such as: product traceability information, phone numbers, web addresses, Wi-Fi passwords, song links, game keys, etc.) and cannot be used as IC or ID type access cards. If there are other custom or development uses, please note whether the chip's protocol, frequency, etc. are universal.