["Notice: Anti Metal type, fit for paste on Metal material, for example, Phone or computer or others.\nCompatiability:\nSupport 13.56mhz RFID and NFC IC reader/writer, For example:Acr122u reader/writer\nSupport for Smart mobile phones with NFC function.\nAndriod system Phone could download the NFC software, such as the for play NFC Task Launcher, NFC ReTag Pro Security Software.\n\nApplication:\nCheck in, mobile payment, product information query, mobile identification, mobile marketing, social networking, business card sharing, access control, membership management, posters, healthcare,book borrowing etc.\n\nParameter:\nChip: Ntag213\nDiameter: 25mm to 30mm (Because of Cutting process, the real diameter is from 25mm to 30mm)\nUsable capacity: 144 bytes\nProtocol: ISO14443A\nFrequency: 13.56 MHZ\nPackaging materials: PE self-adhesive + coated paper\nErase times: > 100000 times\nData storage: > 10 years\n\nNo retail package.\nTransition: 1cm=10mm=0.39inch\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Include:\n6Pcs x Ntag215 Tags Adhesive Labels\n(other accessories demo in the picture is not included.)"]