Protect your eyes and reduce neck strain with a Hobart® Hood| Auto-darkening welding helmet meets ANSI 287.1 safety standards; lenses meet CSA and CE standards. Solar powered, battery-assist lenses. Helmet includes extra lens covers. Operates on replaceable lithium battery (included). 2-year limited warranty.XTP Professional Series welding helmetThe Patriot designVariable-shade helmet feature lens darkening from 913Reaction time of 1/16,000 of a secondInternally located controlsLow battery indicatorOperates on replaceable lithium battery (included)2-year limited warrantyModel 770449