[Chip Feature] Manufactured following the IEC 50443A protocol. Features 504-byte storage capacity with read-write lock functionality. Reading and writing time requires only 1-2ms. Data can be stored for over 10 years with more than 100,000 erase and write cycles. [Size and Material] Each card is credit card sized. Made of high-quality PVC material, durable, waterproof, drop-resistant, and fold-resistant, providing reliable protection for the internal chip, suitable for long-term use. Each NFC card comes in individual packaging. [Blank White NFC Card] Printable surface allows customization using most photo ID card printers. Compatible with various thermal transfer and dye-sublimation printers. Not suitable for inkjet printers. [Compatibility] Works with TagMo (Android NFC-enabled smartphones) and Placiibo/Amii/Amii NFC (iOS). Compatible with all NFC-enabled smartphones and devices. [Wide Application] Suitable for check-in systems, mobile payments, product information retrieval, mobile identification, marketing, social networking, business card sharing, access control, membership management, library book tracking, and more. Sensing distance: 0–10 cm (actual distance may vary depending on device). Quantity: 50 PCS Color: White Material: Plastic Size: 85.5 x 54.5 mm Package Contents: 50 x NFC Cards Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement error allowed: +/- 1–3 cm.