The ATN PVS7-2 night vision goggle is a robust, dependable, high-performance night vision system. These NV goggles are designed to assist viewing and provide reliable service in the most unfavorable conditions. It has a diopter adjustment of +2/-6 and a focus range of 0.25 meters to infinity. It operates in temperatures between -40 +50°C and uses two 1.5 Volt AA size batteries. It measures 162 X 76 X 152 mm and weighs 680 grams.