Specifications for EOTech Vudu 2.5-10x44 FFP Precision Riflescope: Magnification: Range 2.5 - 10 x Objective Lens Diameter: 44 mm Tube Diameter: 30 mm Finish: Flat Black / Type III Anodized Adjustment Click Value: 0.25 MOA Additional Features: XC High-Density Glass, , EZ Chek Tactical turrets for quick return to zero Package Type: Polymer hard case Adjustment Range: 0.25 MOA Caliber: All centerfire including some .50 W/E Travel at 100 Yds: Range -50 - 50 MOA Weight: 26.8 oz Field of View: 44 ft at 100 yds Eye Relief: Range 87 - 97 mm Length: 14.06 in Color: Black Reticle Type: Ranging Adjustment Type: MOA Illumination Type: LED Height: 2.7 in Width: 3.1 in Battery Type: CR2032 Parallax: no parallax adjustment Battery Life: Approx. 500 hours Diopter Adjustment Range: Range -2 - 2 dpt Lens Material: Broadband anti-reflection coating Condition: New Reticle Focal Plane: First Plane Water Resistant Mark: 1 m Water Resistance Level: Waterproof