[Chip Function] The manufacturing process strictly follows the protocol /IEC 50443A. It has 504 storage capacity and read-write lock function, the read and write time only needs 1-2 ms, data can be stored for more than 10 years and more than 100,000 erasures and writes. [Size and Material] Standard card size, each card is the size of a credit card. Made of high-quality PVC material, robust, waterproof, drop-proof, bend-resistant, perfectly protects the internal chip, suitable for long-term use. Each NFC card with bag individual packaging. [Blank White NFC Card] The printable surface allows you to personalize your NFC card according to your needs, it can be used by most photo ID card printers, such as for , for , for , for , for , for Nisca, for NBS & etc. DO NOT use for inkjet printers. [Compatibility] Compatible with for TagMo(Android NFC-enabled smartphones) and for Placiibo/Amiiboss/Amii NFC (iOS). Suitable for all NFC-enabled smartphones and devices. [Wide Range of Uses] Can be used for check-in, mobile payment, product information inquiry, mobile identification, mobile marketing, social networks, business card sharing, access control, member management, book lending, etc. Sensing distance: 0 - 10 cm specific actual distance related to sensors Quantity: 50 PCS Color: White Material: Plastic Size: 85.5x54.5mm Package Contents: 50 * cards Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.