Hawke Nature-Trek 13-39x56 Straight Spotting Scope Following the success of their mid range Nature-Trek binoculars, Hawke have also introduced a range of Nature-Trek Spotting Scopes with brilliant performance for scopes at this price. Fully Multi-Coated Optics On all Nature-Trek Spotting Scopes, the lenses are fully multi-coated. Combined with the BAK-4 Porro prisms, these coatings minimise glare or other unwanted reflections to ensure the quality of images through the scope is clearer and brighter. Ultra Compact with Barrel Focus The Nature-Trek spotting scopes are ultra lightweight and compact, which means there is a barrel focus rather than a separate dual focus knob, however, for these compact models that is perfect. Added protection All Nature-Trek Spotting Scopes are completely waterproof, and supplied with stay on cases for added protection. Constructed from lightweight, yet robust, polycarbonate body material, means that these Spotting Scopes are durable