The aggressively redesigned power selector is easy to grasp and turn and allows the shooter to quickly verify the power setting even with gloved hands. The Twilight Max Light Management System delivers the highest average light transmission in all colors with emphasis on the blue and red portions of the light spectrum for exceptional low light performance and contrast in all conditions. Edge blackened lenses reduce diffusion and glare to improve resolution and contrast. Second generation Argon/Krypton gas more effectively resists thermal shock and the dual spring precision adjustment system ensures match grade repeatability and strength. Top it all off with DiamondCoat 2™ external lens coatings for scratch resistance and you can see why the VX-3i is the first, last, and only name in riflescopes.