Specification Brand : The Printer Guyz Label : The Printer guyz Manufacturer : The Printer guyz ManufacturerPartsWarrantyDescription : Every product is guaranteed against electronic failure for life. If a card stops working due to internal failure of chip or Antenna The Printer Guyz will replace it for free. *Does not include user damage* PackageDimensions_Weight : 0.437500 PackageDimensions : L:4.00 X W:4.00 X H:3.00 PartNumber : PVC26B ProductGroup : Personal Computer ProductTypeName : INPUT_OUTPUT_CARD Publisher : The Printer guyz Size : 500 SmallImage_Height : 46 SmallImage_URL : https://m.media-amazon.com/images/I/41IfhF3itIL._SL75_.jpg SmallImage_Width : 75 Studio : The Printer guyz Title : Custom Programmed Prox Cards Comparable to 1386 Cards and compatable to Most 26 bit, 35 bit and 37 bit formats (500 Cards) Weight : 0.4 WeightUnit : pounds