50pcs/lot UID Changeable Card 13.56MHz Rfid block 0 writable Card(1K) This card works the same as the normal IC card,Only the Sector 0 Block 0 which is known as the serial No.block(UID)could be programmed to any UID you want. Could be modified many times Organized in 16 sector with 4 blocks of 16 bytes each(one block include 16 bytes) Frequency:13.56MHz Protocal:ISO1443A Capacity:1K byte EEPROM memory Rewrite times:100,000 times Read distance:0-10Cm(depend on the R/W device) Material:PVC Size:84*54*0.8mm GUARANTEE & WARRANTY: 100% fully checked and QC passed from factory. Original packaging and accessories produced by the manufacturer. One Year Warranty from the date of shipment Payment: We accept payment by Credit Card, Bank Transfer and other Payment that Aliexpress support. Payment must be received within 19 days of auction closing Please list your special requests (color, packages, value of declaration, etc.) when you make payment, or send message to us. shipping&handing We Ship to Worldwide Except APO/FPO We only ship to confirmed order addresses. Your order address MUST MATCH your shipping address. Delivery Time: SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. If you have not received your shipment within 30 days from we send it out, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction! Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery. We ship to Worldwide, and the Approx Delivery Time is referred as below: Important duties: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers? responsibility You need to check this with your customs office to find out what these additional costs will be prior to buying Before signing the package, please check to make sure the product is not damaged during the transportation and whether the product is in it. If not, please refuse to sign it. You will be considered receiving the right product as long as you signed the parcel Refund &Return: We do our best to serve our each customer the best that we can. you have 14 days to return it from the date it was received. Please contact us in the 14 days. If this item is in your possession more than 14 days, it is considered used and we will not issue you a refund or replacement. hope you can understand. All returned items must be in the original packaging and you must provide us with the shipping tracking number, your reason for the return, and your Aliexpress ID. We will refund you upon receipt of the item in its original condition and packaging with all components and accessories included. You also can choose to have a replaceme Feedback: If you have some problem with the color, size, quality or other problem, please contact us freely before you give us a neutral/negative feedback. We will leave POSITIVE FEEDBACK as soon as the Aliexpress allow us to leave feedback. We warmly like to give you satisfy solution. If you love our item, warmly expected your five stars feedback. We will work harder to give you a satisfy service. Since your feedback is very important for us, we sincerely invite you to leave positive feedback for us, thank you very much!