The Meprolight MCO PRO 2/68 MOA Reflex Sight 901142372 is a cutting-edge optic designed for precision and reliability in any environment. Featuring a closed emitter design, this sight shields against all elements, ensuring peak performance. The user-selectable 3-segment reticle offers 10 daylight and 2 night vision brightness settings, allowing for customized visibility in any scenario. With a battery life of over 25,000 hours on setting 5, the MCO PRO also includes automatic and manual brightness control, as well as a convenient Shake Awake feature. Built to withstand harsh conditions, this sight is IP67 water and dust proof, making it a durable and dependable choice for tactical shooters and hunters.