Description: brand new and high quality Specifications: Chip: Ntag215 Usable capacity: 504 bytes 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 percent Erase times : > 100000 times Data storage: > 10 years Reading time: 100000 times Diameter: 25mm or 1.02 inch(approx.) Materials: PVC Compatability: 1) Support 13.56mhz RFID and NFC IC reader or writer, For example:Acr122u reader or writer 2) Support for Smart mobile phones with NFC function. Brand for Smart phone: for Sony, for HTC, , for Nokia, for LG include for blackberry,for Nokia Lumia, Nexus4 or 10,for Galaxy S4,and other mobile phone could support NFC function. Andriod system Phone could download the NFC software, such as the Google for play NFC Task Launcher, NFC ReTag Pro Security Software. 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. Quantity:10Pcs Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Include: 10Pcs x NFC Tags (other accessories demo in the picture is not included.)