Welding helmet with large professional Wideview visor will help you accomplish all your work without any difficulty. It is light but comfortable with 4 points of support on the head support. It includes 4 sensors on the front of the visor to ensure that there is no blind spot during the UV ray when you weld. The automatic front glass measures an impressive 5 inches diagonally. The lithium battery is interchangeable and included with the helmet.