Aim Sports 4X32 Tri III. Scope with Fiber Optic Sight High performance optical scope with fiber optic sight 4X magnification power and 32-millimeter objective lens Six-inch total length, 30-millimeter tube diameter, 32-millimeter objective lens, and 2"-2.5"inch eye relief Eight-millimeter exit pupil, 36.6-foot field of view at 100 yards, and 16.4-ounce weight Includes limited lifetime manufacturer's warranty