The Sightron SIH39X32RF Rifle Scope features 3-9X magnification with an objective diameter of 32mm and tube diameter of 1 inch. The low profile hunting turret features round knurled dials with positive audible clicks for quick and easy adjustments and has windage and elevation caps. This rifle scope features fully multi-coated lenses that employ coatings on both surfaces of precision ground glass to provide maximum optical quality and light transmission. This scope is also waterproof, shockproof, and nitrogen gas charged.