Do not purchase this item

This travel immersion should is very dangerous and should not be used or sold. When our heater arrived, there was a notice that indicated that the heater was made in china, it contains lead, and you should wash your hands after using it. We were going to use the heater to heat coffee or tea while on travel so you can imagine our surprise. If I could give this less than one star I would definitely do that; I am really surprised that Amazon and others are selling this dangerous product. If you don't take my word for it, buy it for yourself and you will see.