Welding respiratory protection system featuring the V 100 cool air valve. Lightweight belt mounted valve allows welders to lower temperature of air entering headpiece by up to 50°F (28°C); designed for hot, strenuous jobs. With improved optics, the 3M™ Speedglas™ Auto Darkening Filter 9100XXi allows you to more readily recognize colors as compared to our other models. This may help you focus on your welding set up, welding technique, precision grinding, and inspection of just completed welds. Other features include: * Grab and go with auto on. * The 9100XXi silver front panel houses external controls, enabling fast and easy access to the grinding and memory modes. * Two memory modes that allow you to set individual settings for dark shade, light to dark switching sensitivity, and dark to light delay. * External grinding mode activation * An improved user interface that is easy to understand * 3M™ Speedglas™ Auto Darkening Filter 9100XXi offers a 2.8" x 4.2" viewing area (approx) * Selectable Shades 5, 8 13 and Shade 3 light state. * Delay function to set the dark to light opening time. * Sensitivity of the arc detection that can be adjusted * Comfort mode for tack welding and two step recovery are not available with this model. * Side windows Shade 5 side filters that help increase peripheral vision * Ergonomic, adjustable head suspension for increased comfort, helmet stability and weight distribution * NIOSH approved system; meets ANSI Z87.1 2010 high impact. * Storage bag, welding cap, and starter kit included