• Integrated System: State-of-the-art stove and high-efficiency cookware are combined into a compact, self-contained and easy-to-use system.
• Unrivaled Boil Time: Outperforms the competition in head-to-head lab tests—boiling .5 liter of water in just 1.5 minutes—with an even greater advantage out in the real world.
• Unmatched Wind Protection: Heat exchanger completely encloses radiant burner head, virtually eliminating the effects of wind to maintain outstanding boil times and save fuel.
• Maximum Efficiency: Patent-pending radiant burner, heat exchanger and internal pressure regulator produce best-in-class, fuel-sipping efficiency in all conditions.
• Compact: All systems are self-contained, fitting the stove and fuel inside the pot. (1.0L Reactor System nests optimally with our new, smaller-diameter 4 oz. canisters, which are sold separately)
• 2.5L System: Boils enough for five freeze dried meals at once, or make it an expedition snow-melting powerhouse for 2-3 people.

Specs:

• Dimensions: 7.2"W x 7.7"L x 5.8"H
  
• Weight: 1lb 5oz
  
• Minimum Weight: 1 lb 5 oz 
  
• Packaged Weight: 1 lb 5 oz
  
• Burn time (MSR IsoPro) per 227-g / 8-oz. canister: Appx. 80 minutes
  
• Boil time (MSR IsoPro), 1 liter: 3 minutes 
  
• Water boiled (MSR IsoPro) per 227-g canister: 22 liters
  
• Water boiled (MSR IsoPro) per 1 oz. of fuel: 2.8 liters 
  
• Volume: 2.5 liters 
  
• Packed Size: 7.3 x 5.5"