Universal Auto-Darkening Welding Helmet * Viewing Area: 3.86" x 1.69" ;Cartridge Size: 4.33" x 3.54" x 0.35" * UV/IR Protection: Permanent Shade DIN16 ; Light State: Shade DIN3(S777), DIN4(S7770a) * Darkened State: Shade DIN 9 to 13 Variable ; Power On/Off: Fully Automatic * Quantity: 1