Highly versatile Miller Digital Infinity Series welding helmet has 4 distinct operating modes—weld, cut, grind, and X-mode—and a large viewing area that automatically darkens when an arc is struck. X-mode uses electromagnetic sensors to help you see see your arc, even in bright sunlight, or if sensors are blocked. InfoTrack feature tracks arc time while under the hood, and incorporates a digital display that also gives you the ability to set an alarm or timer. With sensitivity and delay controls. Auto Darkening Welding Helmet, Black