The package contains high-quality NTAG213 NFC labels with a diameter of 25mm. Waterproof and oil-resistant, long-lasting. Fast induction with accurate reading and writing distance of 0-10cm. The circular label is made of environmentally friendly PET material, smooth, wear-resistant, and glossy. Circular stickers have strong adhesion and are easy to attach to most surfaces. (Not suitable for use on metal surfaces or in strong magnetic fields). Chip protocol: ISO/IEC 14443. Chip model: NTAG213. Memory capacity: 180 bytes total, 144 bytes user memory. Antenna size: 25mm. Operating frequency: 13.56MHz. Write endurance: up to 100,000 cycles. Sensing distance: up to 10cm. Mounting: Includes adhesive backing for secure attachment. Applications: Patrol tags, identity recognition, anti-counterfeiting traceability, mobile sensor payment. Note: Slight variations in appearance, color, and printed characters may occur between batches; these do not affect functionality. Color: As shown in images. Material: PET. Package Contents: 100 x label sticker Only the above items are included; other accessories are not included. Note: Lighting effects and display settings may cause slight color differences between the image and the actual item. Measurement tolerance: +/- 1-3cm.