The package contains high-quality NTAG213 NFC labels with a diameter of 25mm. Waterproof and oil-resistant, long-lasting. Induction fast 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: NTAG213 Memory/User data: 180 bytes / 144 bytes Antenna size: 25mm Operating frequency: 13.56MHz Write endurance: 100,000 cycles Sensing distance: up to 10cm Mounting: 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; this does not affect functionality. Color: As shown in picture Material: PET Package Contents: 100 x Label Sticker Note: Light reflection and display settings may cause slight color differences between the image and actual item. Measurement error allowed is +/- 1-3cm.