The Laser Cleaner comes with a few different power output options, either in Continuous or Pulse Laser depending on Power Output, & Continuous vs Pulse Beam, Length of Optical Cable. We currently have some 200watt Pulse Beam (30ft cable length) and 1500watt Continuous Beam (30ft Cable Length) around the LA warehouse. They sell even though Continuous Beam is “higher Powered,” the Pulse Head is a more “advanced cleaning method” so Lower-Power-Pulse-Laser-Cleaner will clean as well as Higher-Powered-Continuous-Beam-Cleaner. Generally speaking, Continuous Beam is easier on “rough applications” (cleaning rust in oddly shaped gutters, getting into corners that cannot be approached from a level angle, etc) while Pulse works better on a more level/controlled area (production or refinishing shop, flat surfaces).