The Optimus Crux Lite is equipped with the powerful burner of the Crux, but even lighter in weight as it does not have a folding mechanism. Includes burner with valve and stuff bag. Ignition: Manual. Size: 3" x 2.2" x 2.2". Output: 10,200 BTU. Crux Lite Piezo: Includes Optimus Crux Lite stove and a handheld Piezo ignitor|Boil time: 3 min (1 liter)|Weight: 2.54 oz.