The Vintage Salton Hot Tray Automatic Food Warmer H-110 is a warming tray made of glass and silver ( I don't believe it's real silver). It is designed to keep food warm and ready to serve. The tray is automatic, which means it can regulate the temperature to keep the food at the desired heat. The brand of the product is Salton, and it is a vintage item. It has been tested and it does work. From a smoke-free home.