100% brand new and high quality Compatiability: 1) Support 13.56mhz RFID and NFC IC reader/writer, For example:Acr122u reader/writer 2) Support Smart mobile phones with NFC function. tware. Application: Check in, mobile payment, product information query, mobile identification, mobile marketing, social networking, business card sharing, access control, membership management, posters, healthcare,book borrowing etc. 50pcs NFC Wet Inlay Tag Chip: Ntag215(504bytes) Protocol: ISO14443A Working frequency: 13.56 MHZ Reading and writing distance: 1 to 5 cm Reading and writing time: 1 to 2 ms Working temperature: -20 to 55 degree, humidity of 90% Erase times : > 100000 times Data storage: > 10 years Reading time: 100000 times Diameter: 25mm Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: (No retail package) 50PCS X NFC Sticker Key Tag