BriteLyt, Petromax USA 500CP/XL Pressure Lantern Premier Package. Lifetime Warranty, Only BriteLyt has Viton Rubber for all rubber parts. 550 watts of light, the 500CP XL lantern. Industry, at 8 hours up to 25 hours. Only BriteLyt has Viton Rubber for all rubber parts. Made of Brass and stainless.