100% brand new and high quality Specification:Chip: Ntag213Physical capacity: 180 bytesUsable capacity: 144 bytesProtocol: ISO14443AWorking frequency: 13.56 MHZReading and writing distance: 1 to 5 cmReading and writing time: 1 to 2 msWorking temperature: -20 to 55 degree, humidity of 90%Erase times : > 100000 timesData storage: > 10 yearsReading time: 100000 timesDiameter: 25mmPackaging materials: PE self-adhesive + coated paper Note:1.Transition: 1cm=10mm=0.39inch2.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 youAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.