Brand Name: TywelMaster Origin: CN(Origin) Helmet Material: Washable Flame Retardant Cotton Fabric Helmet Material: None Sensitivity: NA Switch Time: NA Solar Powered: NA Solar Powered: None Is Smart Device: NO Power Supply: NA Cartridge Size: 39x50cm View Area: NA Model Number: WeldingHood6680 Auto-Darkening: NO Anti-Fire Stitched: Yes