The Stedi-Eye Mariner has been manufactured to U.S. and Foreign Military standards. Stabilized viewing on water is essential, so why not use the best product on the market The Stedi-Eye Mariner Stabilized Binoculars. The problem with most stabilized binoculars on the market is that they are fragile and break easily, The Stedi-Eye Mariner is of military standards so you know it won't break.