Burn all liquid fuels and butane with a simple twist of the burner cup. No parts to change or replace. Approx. BTU rating: 10,000 Liquid fuel - 12,000 Butane, burn time: 2.5 hours on high output, Boil time (1 L of water): Down to 3.5 minutes. Dimensions: 4.1”x5.2”x2.3”. Weight: 16oz.