The Visionking 2.5-10x32 rifle scope has compact body design,long eye relief,super wide angle,trajectory lock, side illumination, glass-etched Mil-dot, perfect for hunting. Shock proof, Water Proof and Fog Proof (Nitrogen Purged), high-durability aluminum alloy in black matte. Objective lens:32mm Field of View:7.8°~ 2.9° Eye Relief (inch):4.4-3.75 Finish:Matte black Battery:CR2032 3V(No include) Tube Diameter:30MM Parallax:+0.22SD ~ -0.22SD Weight:860g Shockresistant:1800G