1、Practical Function: Fast response time, easy to use, light weight and easy to embed in targets such as product labels or electronic devices. 2、Safe Material: Made of durable PET material, it can be placed outdoors or near water without the risk of losing its function, with a smooth and shiny surface, resistant to wear and tear. 3、Lightweight: The NFC stickers have the small size, which is very easy to carry. It can be attached to the back of the phone or other flat surfaces without degrading performance. 4、Intelligent Anti Interference Function: It allows multiple tags to work in the field at the same time. The anti jamming algorithm selects each tag separately and ensures that the selected tag executes the transaction correctly. 5、Easy to Use: Simple operation, just close the sensing area to read with NFC attached devices, eliminate the need to carry NFC cards, etc. 20 x NFC Stickers Item Type: NFC StickersMaterial: PETOperating Frequency: 13.56MHzReading Distance: 0-5cm / 0- 1.97inWorking Mode: Readable and writableSize: Approx.40mm / 1.57in