According to MSR, "the fastest-boiling, most fuel-efficient all-condition stove system ever made. It offers unprecedented performance in challenging conditions, including superior wind protection and consistent flame output at all temperatures, elevations, and fuel levels. It's also compact and easy to use, comprising a patent-pending canister stove and a high-efficiency 1.7-litre pot with a see through lid that makes it great for everything from solo trips to cooking for groups of up to three people."
The patent-pending radiant burner is enclosed by heat exchanger for total protection in even the windiest conditions and this means that the Reactor is the most efficient all-conditions stove system, so you don't have to carry as much fuel. This state-of-the-art stove and high-efficiency pot are combined into one compact, easy-to-use system. An internal regulator equalises fuel pressure for optimal performance in all conditions and at all fuel levels.
Although it will not work above 6500m, it is probably the most outstanding snow melter available of any gas stove. There is a good comparison of it with a Jetboil on larsonweb.com. There is also a very positive review of the Reactor Stove and a good comparison with the Jetboil equivalent on the Rock & Ice Magazine Website.
Boils 1 litre of water in just 3 minutes.
Weight (not including gas cylinder) 585g.
NB Gas cylinder not included!
MSR Reactor Instructions.