Leupold Mark 4 12-40x60 Tactical Spotting Scope is designed to stand up to the rigors of a tactical operators life. The Mark 4 12-40x60mm Tactical spotting scopes from Leupold feature index matched lenses with an interior that facilitates light absorption for a incredibly sharp, bright, clear view. This Leupold spotting scope offers a vast field of view at all magnifications so you can track and located targets with ease, plus the range and versatility of a 12-40x60 spotting scope. Leupold has included folded light path lens and mirror optical system for an optical path of almost twice the length of the spotting scope. The Leupold 12-40x60 Mark 4 spotting scope has long eye relief for comfort and ease of use, and an armored magnesium construction for lightweight ruggedness. In addition, the nitrogen filled seal ensures a waterproof spotting scope.