Water Resistant Binocular (8-32X50 Black)We have selected this product from many because of its unique feature: it offers zoom magnification from 8 to 32 times with a high brightness 50mm objective lens. It also has a BAK 4 prism and optics which indicates a quality product. We do not, however, recommend the product for marine use for two main reasons; It is not waterproof The magnification range, 8 to 32 times makes it difficult to use on the water. This product is far more useful on land