A great deal on a smart key set! The Lexus mark is blue. I believe it fits 20-series RX and 10-series NX hybrids, but please confirm compatibility with the model number, etc. Smart key circuit board part number: 9/10 231451-3950 The gray circuit board cover has 007-AH0228 14FAZ written on it. This is an unused spare, so it's in beautiful condition and I think it's a beautiful item. Please check the images for details and purchase with the understanding that it is a used item. Furthermore, it's a great deal with a new battery included for peace of mind! Operation has been confirmed. Please understand that re-registration, etc., is your own responsibility and can be done online or at a dealer. LEXUS Lexus IS RC RCF CT GS HS RX ES NX UX