It burns so hot and bright that it can be used for lighting and/or heating. In an emergency it could boil water or cook. Using all four wicks it should burn for over 50 hours (if alternating wicks one at a time, over 100 hours). 100% Beeswax it gives off NO noxious fumes. It is ideal for camping or carrying in your car for emergencies. The cover doubles as a pot to melt snow or heat water. It holds one lb of beeswax, four embedded wicks, and wooden matches.The Candle comes with precise instructions for use.