... DIN9-13 Switching time:1/25000s at room temperature safety auto welding maskmaterial:nylonlight state: DIN4 , Dark state:DIN9-13Switching ... adjustmentbaterry:Li-mi & solar combination (min. lfteime:5000 welding hours)operation temperature::-5°C(23°F)— +55°C(131 ... We're professional in different safety item, such as safety helmet, welding glasses,safety glaess,vest, safety glove, traffic baton,traffic ...