The EOTech Vudu VDU318SFHC1 rifle scope delivers precise long-range performance with 3.5-18x magnification and a 50mm objective lens in a durable black finish.EOTech Vudu VDU318SFHC1 Rifle Scope3.5-18x variable magnification range50mm objective lens for enhanced light gathering34mm tube diameter for superior trackingAnti-reflection optic coating for clarityFog shock and water resistant construction3.46" - 3.90" eye relief range30.20 ft field of view at 100 yards15.13" overall length 33.60 oz weightBuilt for precision shooting and hunting applications this scope combines EOTech's proven reliability with advanced optics technology for consistent performance in demanding conditions.