Simple operation: the process is simple, just the phone on the 215 coin tag, and the data will be entered into your phone, no energy, battery or manual pairing is required, easy to use. Small size and small material: The circular NFC sticker has a diameter of 25mm, is small and portable, fits a white PVC card, and has a shiny surface and a waterproof pvc material to effectively the NFC chip inside. Wide range of applications: pvc NFC stickers can be used in outdoor smart advertising, mobile phone matching labels, WiFi matching, electronic label shelves and business cards, etc. 30 pieces for NFC round cards, rewritable NFC sticker tags compatible with for tagMo and , 504 bytes of memory are fully programmable for devices support NFC Readable card:Due to readable and writable characteristics, NFC sticker tags allow people to change and read data at any time, and the internal chip can quickly read data. Please note devices support NFC are required. suitable occasion:You can use the card to set alarms, turn WiFi, make calls, applications, networks, display messages, share contacts, display addresses or locations, social media, open web , etc. Colour:White Material:PVC Package Contents: 30 * 25mm chip Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.