AUDEW Adjustable Solar Auto Darkening Welding/Grinding Helmet TIG MIG Weld Welder Lens Grinding Mask ((Flames pattern) 1. UV/IR Protection: DIN16 2. Dark states:DIN9-13 free adjustment(Outside Variable) 3. Response time(bright to dark):&lt;1/30000 seconds(normal tempteratur conditions) 4. High strong materials and fire retardant,can prevent resistance,anti-aging 5. High definition protective filter,you can see the welding conditions clearly when weling the goods.Welding luminosity is soft and comfortable.