Pyramex Glossy Black Decorated Auto Darkening Helmet WHAM3030GBSuperior comfort with pivot style headgearMade of high-impact resistant nylonFour independent arc sensors in a staggered design to deliver the most reliable arc detectionHigh speed lens 1/30000 secondPowered by solar cells and replaceable lithium-batteryIncludes magnification lens holderFully adjustable nylon suspension Pyramex Leadhead Glossy Black Decorated Auto Darkening Welding Helmet WHAM3030GB