Waterproof and oil , and long-lasting Induction fast and accurate reading and writing distance 0-10CM The circular label is made of environmentally friendly PET material. The is smooth, wear-, and glossy. Circular stickers have stickiness and are easy to stick to the of most items. (Not supported on metal surfaces and strong magnetic fields) Specifications Chip protocol: /IEC 14443 Chip model: D213 Storage/User 180B/144B Antenna size: 25mm Storage user: 13.56MHz Scratching frequency: 100000 times Sensing distance: within 10cM Fixation method: With adhesive backing, it can be glued together Scope of application: Patrol tags/Identity recognition/Anti counterfeiting traceability/Mobile sensor payment. Colour: Material:PET Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Package Contents: 50 x label sticker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.