Zeiss binoculars, spotting scopes and monoculars attain their inherent quality from the top quality components brought to bear. As you'd expect, Zeiss produces and process only the finest glass. Because Zeiss never-ending goal is to provide you with accurate color, stunning contrast, crisp imagery, and a lifetime of profoundly satisfying performance. Each model is rugged enough to endure the worst the world has to offer. Including weather that's in complete conflict with your adventures. Add to that, Zeiss binoculars, spotting scopes and monoculars are backed by a 10 years Transferable Warranty.