The Eastwood Extra Large View Auto Darkening Welding Helmet is one of the best helmets on the market for the price. It features True Colour Technology, which allows a realistic colour perception so you have a much clearer view of what you are welding. Durable and lightweight. Impact-resistant nylon. Multi-adjustable head band. Variable No. 4 to No. 13 shade. Extra-large viewing area. Grind feature. Optical clarity 1/1/1/2. Magnifying lens compatible. Grind mode allows you to quickly reshape tungstens, grind spot welds and more, without having to remove the helmet. An extra-large 3.9-by-3.6-inch view area assures accurate MIG or TIG welding without neck strain, and adjustable head gear eliminates fatigue. It includes a replaceable Li Mn battery with arc charging for up to three years usage. It has earned CE, ANSI and RoHs certifications. True Colour Technology: The True Colour Technology allows a realistic colour perception so you have a much clearer view of what you are welding.   External Shade Controls: