Hawke Optics Endurance ED Marine Binoculars 7x42 Monocular - Blue [36520]Endurance ED Marine Binoculars 7x42 Monocular Blue A range of optics designed specifically for marine applications. For over a decade, Endurance ED optics have been renowned for incredible performance and reliability. Now, with the introduction of the Marine range, we have expanded upon this award winning selection with optics specifically designed for marine and boating applications. With a range of models to choose from, the Marine Optics family