Specifications Hign-concerned Chemical:None Model Number:CUID T5577 Ring Origin:Mainland China Certification:None Smart Chip Dual Frequency Ring T5577+CUID Rewritable Tag ID IC Clone Badge 125Khz 13.56Mhz Token Copy Duplicator Write Dear, I'm so glad you could visit our store. The company was founded in Shenzhen, Guangdong, China, has an independent research and development team, can solve any card and reader related solutions for you. If you have any questions, please feel free to contact us. We ensure that all products are high quality products, can pass most international standards, at the same time, card readers have CE standards. Support custom printing of 125Khz/13.56Mhz mobile phone stickers, standard cards, key strings and card readers. Whether you buy or not, our team is happy to provide you with technical support and problem solving on card and card reader solutions! I wish you a happy life and best wishes. Caution: The ID (125KHZ) Chip Is The T5577 Chip, The Card Number Is Empty, It Needs To Be Read After Writing. The IC Chip (13.56Mhz) Is A CUID Chip.(Please make sure the machine supports writing to CUID card) Please Use A Professional Duplicator When Copying, If You Need, Please Contact Customer Service. Specific measurement methods: Please use a thin line or paper strip to measure the circumference of the finger wearing the ring, and select the number corresponding to the size chart above. 1. Use a thin, non-elastic rope. 2. Make a circle around the place where you wear the ring and tighten the measuring line. 3. Use a ruler to measure the length of the rope. Precautions: 1. Use thin paper strips or ropes to measure the position of your fingers. Do not measure the finger joints. Make a mark where the paper strips or ropes overlap. 2. During the test, be sure to tighten the paper strip or rope, measure multiple times and take the average, and control the error within 1MM to avoid abnormal differences. 3.Because some customers may not measure accurately, we usually send them the size they choose, but we may also send a larger size to avoid being unable to wear it! About Size: No. 6: circumference 53MM, diameter 16.5MM No. 7: circumference 56MM, diameter 17.3MM No. 8: circumference 59MM, diameter 18.2MM No. 9: circumference 62MM, diameter 18.9MM No. 10: circumference 65MM, diameter 19.8MM No. 11: circumference 68MM, diameter 20.7MM No. 12: circumference 71MM, diameter 21.3MM No. 13: circumference 74MM, diameter 22.2MM In terms of appearance, it basically matches the picture. If there are slight deviations, please refer to the actual product. Packaging: smart ring The ring size error is less than or equal to 1MM, you can choose the size you need! Please refer to the actual product! About writing cards: The ID writing area is the inner diameter marking area, and the IC is in the middle position corresponding to the marking (that is, the other side of the circle diameter, please try) Please see the picture below. About customs clearance: We will assist with customs clearance for the parcel. Normally, you just need to wait for the parcel to arrive. If there is a special case, we will help you solve. (Please cooperate with the customs of the destination country to deal with the goods to avoid mistakes) Delivery of goods will choose the fastest and appropriate logistics! We will send it as soon as possible, just wait for the package to arrive! If you have requirements on the delivery time, you can choose the express transportation for extra money. If you do not choose the express transportation, we will choose the default way. The usual transportation time is 20-60 days, depending on the actual logistics. It is not supported to initiate disputes or reject goods for logistics reasons, otherwise the cost of delivery and return shall be borne by the buyer. About product quality and returns: If there are any technical problems with the product, we will help solve them. If the product does not achieve the desired effect of customers, we support customers to return the product for a refund. The replicator/card reader/card matches 98% of systems, but if it is a special system or a special protected card, the card cannot be copied. (including but not limited to live card, advanced encryption card, credit card, etc.) Product warranty for one year, if there is any problem, please contact us, we will solve for you! If consumers do not like the product or do not meet expectations, please contact us within 5 working days, we support the return of refund, return freight needs to be borne by the buyer. Please read the above terms carefully and purchase is deemed to be a tacit agreement to the above terms.