The Trijicon 1-8x28 VCOG (Variable Combat Optical Gunsight) is a highly rugged, variable magnification Rifle Scope designed for close quarter battle (CQB) and long distance marksmanship. With a forged aircraft-grade 7075-T6 aluminum housing, the VCOG is nearly indestructible. Superior glass provides exceptional clarity and color with zero distortion. The universal segmented circle crosshair dot reticle is designed for multi-platform use, accommodating multiple calibers, ammunition weights, and barrel lengths. The first focal plane reticle allows subtensions and drops to remain true at any magnification, allowing the shooter to quickly and accurately apply the correct hold. With ruggedized electronics, the LED reticle is robust enough for any application. Powered by a lithium AA battery (provided), the 1-8x28 VCOG offers a battery life of 633 hours at setting 6. Choose from 11 user-selectable brightness settings, 2 night vision settings, 8 day settings, and 1 super-bright setting. An integrated dial fin allows easy rotation through the magnification range, and a near-constant eye relief means no head or stock position adjustments are needed. Waterproof to 20 meters (66 ft.). Specifications for Trijicon VCOG VC18 1-8x28mm Rifle Scope, 34 mm Tube, First Focal Plane (FFP): Manufacturer: Trijicon Objective Lens Diameter: 28 mm Magnification: 1 - 8 x Tube Diameter: 34 mm Reticle Focal Plane: First Focal Plane (FFP) Exit Pupil: 11.8 - 3.5 mm Illumination Color: Red Finish: Matte Field of View, Linear: 109.2 - 13.1 ft at 100 yds Field of View, Angle: 20 - 2.5 degrees Eye Relief: 4 - 3.9 in Color: Black Weight: 31.5 oz Length: 10.8 in, 274.32 mm Parallax: Fixed Illumination Type: LED Battery Type: AA, CR2032 Width: 71.12 mm, 2.8 in Fabric/Material: 7075-T6 Aluminum Height: 2.8 in, 71.12 mm Lens Material: Glass Optical Coating: Multi-Coated Brightness Settings: 11 Battery Life: 633 hours Water Resistance Level: Waterproof Water Resistant Mark: 66 ft Shockproof: Yes Fogproof: Yes Battery Quantity: 1 Package Type: Box Magnification Type: Variable Condition: New Features of Trijicon VCOG 1-8x28mm Rifle Scope Bindon Aiming Concept: Yes Battery Life: 633 hours (26.4 days) at setting 6 Illumination Source: LED Powered by a single lithium or alkaline AA battery Illumination Settings: 11 Total Settings - 2 Night Vision, 8 Day, and 1 Super-Bright Setting Package Contents: Trijicon VCOG 1-8x28mm Rifle Scope 1 Thumb Screw Mount (TA51) 1 Lithium AA Battery 1 LENSPEN (TA56) 1 Trijicon Logo Sticker (PR15) 1 Manual 1 Warranty Card