[Chip Feature] Manufacturing process strictly follows the protocol /IEC 50443A. It has 504 storage capacity and read-write lock function, the reading and writing time only needs 1-2ms, data can be stored for more than 10 years, and supports over 100,000 erase and write cycles. [Size and Material] Cards are credit card sized. Made of high-quality PVC material, sturdy, waterproof, drop-proof, fold-resistant, and designed to protect the internal chip for long-term use. Each NFC card comes with individual packaging. [Blank White NFC Card] The printable surface allows customization based on user needs and is compatible with most photo ID card 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, mobile payment, product information query, mobile identification, mobile marketing, social networking, business card sharing, access control, membership management, book borrowing, and more. Sensing distance: 0 - 10 cm, depending on device specifications. Quantity: 100 PCS Color: White Material: Plastic Size: 85.5 x 54.5 mm Package Contents: 100 x Cards Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allows an error of +/- 1-3 cm.