Welding Helmet, ADF Controls Digital, Battery Type CR2450, Color Black/Silver, EN379 Classification 1/1/1/1, Features 1/1/1/1 Optical Clarity, 4C (Tm) Lens Technology, Excellent Indoor & Outdoor Performance, Extra Large 12.5 Square In. Viewing Area, Hard Hat Compatible, Low Profile External Grind Button, Optimized Performance For All Welding And Cutting Proc, X6 Headgear, Graphics Motorhead, Grind Mode Yes, Helmet Material Nylon, Polycarbonate, Helmet Type Auto-Darkening