The DiOptical RV1 has been specifically designed to meet military specifications for operators in combat conditions. It has been proven to hold zero after more than 7,000 rounds of live fire. It features a 27 degree field of view, manual brightness control, night vision compatibility, aircraft grade aluminum body with a matte black hard anodized finish, precise elevation and windage adjustments. It is run on 1 standard AA battery with a continues use of up to 20,000 hours on a medium setting.