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 apply to most surfaces. (Not suitable for metal surfaces or strong magnetic fields.) Chip protocol: ISO/IEC 14443 Chip model: D213 Memory capacity: 180 bytes total, 144 bytes user memory Antenna size: 25mm Operating frequency: 13.56MHz Write endurance: ≥ 100,000 cycles Sensing distance: up to 10cm Mounting method: Adhesive backing for secure attachment Applications: Asset tracking, identification, anti-counterfeiting, traceability, mobile payment systems. Note: Slight variations in appearance, color, and printed characters may occur between batches; these do not affect functionality. Color: As shown in picture Material: PET Package Contents: 100 x NFC label stickers Only the items listed above are included; other accessories are not included. Note: Lighting conditions and monitor settings may cause slight color differences between the image and the actual item. Measurement tolerance: ±1-3cm.