Coleman 5053A751 ProCat Perfectemp Catalytic Propane Heater with Instastart Technology Catalytic heater with platinum technology provides flameless warmth Cordless heater can be used in a garage, shop, house, tent, or ice shanty Pressure-regulated propane fuel system, designed with a fan for better heat circulation Operates up to eight hours on 16.4-ounce Coleman propane cylinder 3,000 BTU; designed for indoor use; limited lifetime warranty