Designed for professional welders and enthusiasts requiring eye protective during / TIG welding, metalworking, and prolonged workshop operations Ideal for construction sites, automotive repair shops, and home garages where sudden bright flashes demand response and consistent visual Equipped with auto darkening technology, these welding goggles instantly adapt to light changes in 1 / 25000 seconds for eye protective during welding Combines solar assisted energy efficiency with user replaceable battery compatibility ( battery not included), ensuring uninterrupted during critical welding tasks with anti fog lens technology Adjustable DIN9-13 shade settings pair with lenses to block welding sparks while maintaining visibility, featuring a lightweight 120g design with headband / earhook wearing option, Manufacturer: CAZSTYK