The Optimus Crux Stove provides dependable, powerful heat in a featherweight design suitable for the most space-thrifty backpacking adventures. Takes up almost no space. Delivers precision simmering, fast boiling and no spot burning thanks to the wide burner head. 10,200 BTU burner boils 1L of water in only 3 minutes Large burner head for even heat distribution Precision heat control Up to 90 min. of heat using (1) 8 oz. fuel canister Uses isobutane-propane Includes storage bag