BioLite CookStove Lightweight Wood Burning Camp Stove Fuel: Uses renewable biomass including twigs, pinecones, wood pellets, branches, etc. Internal jets have 4 fan speed settings circulate air for improved combustion and efficiency to boil 1 liter of water in 4.5 minutes The size of your flame and cooking time adjusts with the fan speed you choose: Turbo for 10 hours, Boil for 20 hours, Simmer for 25 hours, or Campfire for 30 hours Lightweight aluminum legs fold up for nested portability and durability for camping, backpacking or power outages Includes CookStove, Stuff Sack, Fire starter, recharging micro USB cord for fan, instructions and weighs just 1.6 pounds