It also has an built-in IR light source for close-up illumination in complete darkness. Head harness has an ergonomic flip-up and release mechanism to keep the goggle in the up right position. The device can be equipped with optional 4x magnifier to become a long range night vision binocular. The body is built out of special lightweight and extremely durable alloy, it is completely sealed against water and dust for use in the most harsh climatic conditions.