Delivers hot water anytime in any place, connect the hose to a 5 gallon water container which included and adjust to the temperature you want. In less than 10 seconds, you have hot water - water is heated by propane (which are not included). Heats up to 40 gallons of water on one 16 oz. propane bottle. Powered by rechargeable battery which you can recharge in your house of from your car.