[Chip Function] The manufacturing process strictly follows the /IEC 50443A protocol. It has a storage capacity of 504, read/write protection function, and read/write times of only 1-2 ms. Data can be stored for over 10 years, with more than 100,000 erasures and writes. [Size and Material] Each card is the size of a credit card. Made from high-quality PVC material, it is robust, waterproof, drop-proof, and bend-resistant, perfectly protecting the internal chip for long-term use. Each NFC card comes with individual packaging. [Blank White NFC Card] The printable surface allows you to customize your NFC card as needed. It is compatible with most photo ID card printers, such as for Zebra, for Fargo, for Evolis, for Canon, for HP, for Nisca, for NBS, etc. DO NOT use for inkjet printers. [Compatibility] Compatible with TagMo (Android NFC-enabled smartphones) and Placiibo/Amiiboss/Amii NFC (iOS). Suitable for all NFC-enabled smartphones and devices. [Wide Application] Can be used for check-ins, mobile payments, product information inquiries, mobile identification, mobile marketing, social networking, business card sharing, access control, membership management, book lending, etc. Sensing distance: 0 - 10 cm (specific actual distance depends on sensors). Quantity: 50 pcs Color: White Material: Plastic Size: 85.5x54.5 mm Package Contents: 50 * Cards (Only the above package contents are included. Other products are not.) Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.