10 White NFC Tag Stickers 25mm (1 inch) Round - 888 Bytes NTAG216, Compatible with all NFC-capable phones 888 bytes or rewrite-able and optionally password protected or permanently lockable storage (600%+ the amount of storage as an NFC NTAG213) White PET sticker is water resistant Easily concealed by being plain black and the smallest size an NTAG216 can be (Round 25mm) NFC Forum Type 2 Will NOT work on metal surface (there are special tags noted as on-metal for these applications)