The MEPRO RDS PRO V2 electro optical red dot sight is rugged and reliable, shockproof aluminum base displays extreme durability; energy-efficient, compact optic sight, providing thousands of operating hours from a single “AA” battery (Alkaline or Lithium). 16 selectable brightness setting: 12 for daytime, 4 for Night Vision with GEN II and GEN III NVG’s, allowing you to adjust to changing light conditions. In ambiences of brighter light, or subdued light, The MEPRO RDS PRO V2 fits every tactical scenario. The Mepro RDS PRO V2 is equipped with unique energy saving features such as Auto shut-off/Auto power-resume function. The sensor shuts the optic off to preserve battery life when not in use. Automatically turns back on when in motion. The large display window and clearly-defined reticle, ensures rapid target acquisition with both eyes open and Unlimited field of view, parallax free. To facilitate long-rage target engagement, the MEPRO RDS PRO V2 is compatible with Magnifying Scopes such as Mepro MX3F/T or other available models. In the Box: MEPRO RDS PRO V2 sight with quick release picatinny adapter/black field cover/lens cleaning cloth/cleaning brush/User manual.