Durable and lightweight boating binoculars. The Mariner series offers two popular, affordable, and lightweight marine binoculars that fully utilize high-quality, fully coated lenses. The binoculars are available with or without a compass and feature very long eye relief, making them particularly suitable for eyeglass wearers. They float when used with the included floating strap and are designed to allow vision all the way to the edge of the field of view, even when wearing glasses. The polycarbonate frame makes the binoculars lightweight. They have an extremely lightweight yet durable polycarbonate frame and weigh less than 1 kg.