Features: Great For TIG MIG MMA, Plasma Applications with Grinding Feature Super Large Viewing Size 3.93"X 3.66" with 4 Premium Sensors  Better clarity, True Color view - 1/1/1/2 Optical Clarity Increased battery life Superior comfort with the pivot style headgear. Specification: Materials: PP Light states: DIN 4 Dark states: DIN 5～9/9～13 free adjustment(Outside Variable) View Area: 100 x 9.3 cm / 3.93 x 3.66 inch Response time(bright to dark): <1/30000 seconds(normal temperature conditions) Sensitivity (welding based on current size): adjustable: Low/high Power on/off: Fully automatic Power supply: Solar cell replaceable battery UV/IR protection: DIN 16 Working temperature: 23-131℉ Storage temperature: -4-158℉ Low voltage indicator: Yes  ADF self-check: Yes Package Includes: 1 x Auto Darkening Welding Helmet 1 x User's Manual 2 x Replacement Lens 1 x Replacement Battery 1 x Storage Bag 1 x Headgear Note: The headgear is default installed in the middle position. When adjusting the headgear, put both sides in a symmetrical position, or it will break down quickly.