1. NFC Coin Card SizeIncludes 100 Ntag215 NFC tags, round shape, 25mm (1 inch) diameter, small and lightweight, can be carried anywhere. The white NFC tags do not have self adhesive glue. 2. NTAG215 Chip540 Bytes of Memory(504 Bytes Usable), suitable for a url, text, small record or single action phone trigger. Provides enough storage space, you can quickly write the information you want Note: Not supported to use on metal surface. 3. ApplicationCompatible with TagMo and all NFC enabled cell phones and other devices. You can use NFC cards to make TagMo cards, create any character applicable to TagMo and use them to quickly share social media, music, business cards, connect to Wi Fi, etc. 4. NTAG215 NFC card is made of high end waterproof PVC material with smooth and bright surface, wear resistant, good stability, non toxic and odorless, hygiene and . (Note: Not for use in inkjet printers)