I have confirmed that all lights are working, but the brightness may vary depending on the remaining battery power. I believe there are no noticeable stains or scratches, although this is based on a personal inspection. I plan to sell all 5 pieces for 7500 yen, so please comment before purchasing. As a bonus, I will include 4 new batteries. I will ship via Mercari's Nekopos service. I will use simple packaging for anonymous shipping.