The package contains high-quality NTAG213 NFC labels with a diameter of 25mm. Waterproof and oil resistant, durable and long-lasting. Induction fast with accurate reading and writing distance of 0-10cm. The circular label is made of environmentally friendly PET material. The surface is smooth, wear-resistant, and glossy. Circular stickers have adhesive backing and are easy to apply to most surfaces. (Not suitable for use on metal surfaces or in strong magnetic fields.) Chip protocol: IEC 14443 Chip model: D213 Memory capacity: 180 bytes total, 144 bytes user memory Antenna size: 25mm Operating frequency: 13.56MHz Write endurance: Up to 100,000 write cycles Reading distance: Up to 10cm Mounting: Adhesive backing for secure attachment Applications: Patrol tags, identity recognition, anti-counterfeiting traceability, mobile sensor payment. Note: Product appearance, color, and printed markings may vary slightly between batches, but this does not affect functionality. Color: As shown in images Material: PET Package Contents: 100 x Label Stickers Note: Light reflection and differences in display screens may cause slight variations in color representation. Measurement error allowance: +/- 1-3cm.