This is the Logitech Signature Slim Solar+ K980. I purchased it on December 19, 2025, and used it for one day. I bought it because I was attracted to the solar charging function, but I'm selling it because the keyboard is too thin and didn't fit my wrists. There are no noticeable scratches or stains, and I think it's in overall good condition, but please consider this as a subjective assessment. There were no operational problems during use, and it was working without any issues.