The 3M Speedglas G5-01VC Adflo PAPR Welding Helmet is a heavy-duty helmet that provides both eye and respiratory protection for welders. It features a variable-shade auto-darkening filter that darkens in milliseconds to protect your eyes from the harmful effects of welding arcs, and a powered air purifying respirator (PAPR) that delivers clean air to your lungs. The PAPR is powered by a battery pack that provides up to 8 hours of runtime, and it features an audible and visual alarm to notify you when the battery is low. The helmet also features a comfortable head harness and a wide viewing area, making it easy to see your work. Here are some of the key features of the 3M Speedglas G5-01VC Adflo PAPR Welding Helmet: Variable-shade auto-darkening filter (5-14) Powered air purifying respirator (PAPR) Battery life up to 8 hours Audible and visual alarm for low battery Comfortable head harness Wide viewing area The 3M Speedglas G5-01VC Adflo PAPR Welding Helmet is a great choice for wel