The Sightron SIH39X32RF 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 audible clicks for quick and easy adjustments and has windage and elevation caps. This scope features fully multi-coated lenses with coatings on both surfaces of glass to provide maximum optical quality and light transmission. This scope is waterproof, shockproof, and nitrogen gas charged.