Metal Man ATEC8720SGC 9-13 Variable Shade Professional Auto-Darkening Welding Helmet, Techno Skull Pattern 3.86 in. x 1.73 in. viewing area 9-13 variable shade control with auto darkening lens Grind mode 5-point adjustable head gear Removable/washable sweat band Solar powered, plus two replaceable batteries, with auto on/off