[Chip Function] Manufactured following strict IEC 50443A protocol. Offers 504 bytes of storage and read-write lock functionality. Read/write time is only 1-2ms. Data retention exceeds 10 years and withstands over 100,000 erase/write cycles. [Size & Material] Credit card sized. Made from high-quality, durable PVC material. Waterproof, drop-proof, and bend-resistant, perfectly protecting the internal chip for long-term use. Each NFC card comes individually bagged. [Blank White NFC Card] The printable surface allows for personalization using most photo ID card printers (e.g., Nisca, NBS, etc.). Do NOT use 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] Ideal for check-in, mobile payment, product information retrieval, mobile identification, mobile marketing, social networking, business card sharing, access control, membership management, library borrowing, etc. Sensing distance: 0-10cm (actual distance depends on sensors) Quantity: 100 pcs Color: White Material: Plastic Size: 85.5 x 54.5 mm Package Contents: 100 x NFC Cards Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual item. Measurement tolerance is +/- 1-3cm.