HRS-3940-00 Magnification: 3-9x Features: -Rifle scope.-Waterproof.-Shockproof.-Long-lasting.-3-9x Magnification.-40mm Objective lens aperture.-85.12 - 69.2mm Eye relief.-4-12x Magnification.-40mm Objective lens aperture.-13.28 - 4.4mm Exit pupil.-81 - 66.7mm Eye relief.-9 - 2.87mm Exit pupil. Includes: -Rings included. Specifications: -1/4 Click value.-10.8 - 4.16 FOV.-8.3 - 2.87 FOV. Dimensions: -Overall dimensions: 1" - 18" H x 8" W x 8" D.-Length: 310mm.-Length: 330mm.