Nintendo Game & Watch: Super Mario Bros. I used this for about a week and then stored it in a dark room. Operation confirmed. The front of the main unit is in good condition, but there are small scratches on the back where it was in contact with plastic for a long time, as if it had melted slightly (see photo 4). There are also some scratches on the outer box. It will be shipped via post. Please understand this before purchasing. Instant purchase is welcome.