All three work but I think one of them (the one with no metal cap) has a problem with the wax. It’s like all clumped up and don’t really flow. The one with the glitter flows really nice and is very pretty. Both of those lamps are about 10 inches tall. The little night light works good too and it is about 7 inches long. Overall, they’re all really cute and would be great for any retro room.