Trangia 25-3 Ultralight Alcohol Stove Kit Boil Time (1 liter): 8 min (spirit burner), 3.5 min (gas burner) Fuel Type: Alcohol or Butane Output: 1000 w (spirit burner), 2100 w (gas burner) Packed Dimensions: 8.5" X 4.25" Weight: 1.98 lbs (900 g) (spirit burner)