The Sig Sauer Romeo 1 is a red dot sight manufactured by Sig. It has a 3 moa dot and can be adjusted up to 100 MOA in elevation and windage. The optic has a long battery life of up to 5000 hours and uses a CR battery. There are 10 brightness settings to choose from, with the adjustment located on the left side of the sight. Weighing only 0.8 ounces, the sight is ipx7 rated and has a top-fed battery, meaning you won't have to re-zero when changing batteries. The reticle adjustments are located on the top and right side of the sight, and can be adjusted in 1 moa increments. The objective lens diameter is 30mm, and it is surrounded by a lightweight CNC magnesium housing, ensuring reliable use and a lightweight design. The package includes a user manual, lens cleaning cloth, installation tools, battery, and a protective cover for the lens.