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 strong adhesion and are easy to apply to the surface of most items. (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: 100,000 cycles Sensing distance: up to 10cm Mounting: Includes adhesive backing for secure attachment Application: Patrol tags, identity recognition, anti-counterfeiting traceability, mobile sensor payment. Note: Slight variations in product appearance, color, and printed characters may occur between batches, but these do not affect functionality. Color: As shown Material: PET Package Contents: 100 x label sticker Only the above package content is included; other products are not part of this package. Note: Lighting effects and display settings may cause slight color differences between the image and the actual item. Measurement tolerance: ±1-3cm.