Coleman BlackCat PerfecTemp Catalytic Heater with InstaStart Technology Powerful 3,000-BTU heating unit Runs up to 7 hours on one 16.4-oz. propane cylinder (sold separately) InstaStart ignition for easy, matchless lighting PerfecTemp Catalytic technology for safe, efficient flameless heat -- at the game, in the tent, in the garage or around the home High and low temperature settings