Simple operation: The process is simplejust hover your phone over the NFC tag, and the data will be transferred automatically. No power source, battery, or manual pairing required. Easy to use. Small size and lightweight: The circular NFC sticker has a diameter of 25mm, making it compact and portable. Designed to fit a standard white PVC card, it features a glossy surface and waterproof PVC material to effectively protect the internal NFC chip. Wide range of applications: PVC NFC stickers can be used for smart advertising, mobile device pairing, Wi-Fi sharing, electronic shelf labels, business cards, and more. 60-pack of round NFC cards: Rewritable NFC sticker tags with 504 bytes of fully programmable memory, compatible with NFC-enabled devices. Readable and writable: These NFC sticker tags allow users to read and update data at any time. The internal chip enables fast data reading. Please note that an NFC-enabled device is required. Suitable uses: Use the blank cards to set alarms, turn Wi-Fi on or off, make calls, launch apps, join networks, display messages, share contacts, show addresses or locations, update social media, open web pages, and more. Color: White Material: PVC Package Contents: 60 x 25mm NFC chips Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.