This electric rod has not a vessel for the liquid and needs to be dip in liquid. A tube of portable hot water heater is used as the heating element in this water boiler. It is highly durable heating element for faster heating. Anti-corrosive material elements light weight, handy and stylish useful product for everyone. It is a perfect gift for hunter, outdoorsman, traveler, coffee or tea lover, birthday, house warming gift. It is perfect coffee and tea heater at the office, at home, or while you travel. Wonderful addition to your camping accessories. You will have warm water in seconds, boiling water in just minutes. Fill your container, place the immersion heater in the liquid, then turn on the immersion heater. It is that simple