The Lincoln Electric VIKING 2450D, our lightweight premium helmet series, offers an excellent blend of industry leading optics, all-day comfort & versatility. This helmet includes our exclusive 4C lens technology and 1/1/1/1 optical clarity for industry leading optics, low profile external grind control, and large 9.3 sq. in. viewing area. The innovative X6 Headgear™ distributes weight, reduces pressure and optimizes balance. The 2450D helmet gives you access to three modes – welding, cutting, and grinding – with a user-friendly LCD screen digital interface. Just one helmet with one cartridge produces a full spectrum shade 4-13 with variable sensitivity and delay.