Features: 1. Suitable for most NFC devices and bringing more convenience to life with this NFC card you can personalize the NFC device according to your needs. 2.The NFC card uses 215 chips and has 504 bytes of usable memory. The chip has a read-write lock function which can be repeatedly edited or read-only and cannot be edited or reset after being set as a read-only tag. Durable and suitable for long-term use. 3.These NFC 215 tag cards are typically used for contact information such as providing your contact or business information as well as for security and cargo and equipment authentication. 4.Made of durable and waterproof PVC material it can be placed outdoors or near water without the risk of losing functionality. There is no adhesive and it is not suitable for use on metal surfaces. 5.If you have any problem please contact us immediately we will help you solve it as soon as possible. Specification: Chip: NFC215 Usable capacity: 504 bytes Protocol: ISO14443A Working frequency: 13.56MHz Reading and writing distance: 1 to 5cm Reading and writing time: 1 to 2ms Working temperature: -20 to 55 degree humidity of 90% Erase times: >100000 times Data storage: >10 years Reading time: 100000 times Material: PVC Size: 85.5x54x0.8mm Color: White Compatibility: 1. Support 13.56MHz RFID and NFC IC reader/writer. (For example: Acr122u reader/writer) 2. Support smart mobile phones with NFC function. Notes: Due to manual measurement please allow a slight error in size. Due to the difference between different monitors the picture may not reflect the current color of the item. includes: 10 * NFC Cards