100% brand new and high quality Specification: Chip: Ntag213 Physical capacity: 180 bytes Usable capacity: 144 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% Erase times: > 100000 times Data storage: > 10 years Reading time: 100000 times Diameter: 25mm Packaging materials: PE self-adhesive + coated paper Note: 1. Transition: 1cm=10mm=0.39inch 2. Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before purchasing. 3. Due to differences between monitors, the picture may not reflect the actual color of the item. Thank you.