Carson RD Series are lightweight open-bridge waterproof binoculars that boast a high definition and crystal clear image quality. The RD Series comes available in multiple compact and full-sized models ranging from 8x26mm (RD-826), 10x34mm (RD-034), 8x42mm (RD-842), 10x42mm (RD-034) and 10x50mm (RD-050). All versions of the RD Series binoculars are nitrogen filled and o-ring sealed making them both waterproof and fogproof. They all contain BAK-4 prisms ensuring super sharp and ultra precise images. The 8x26mm (RD-826) and 10x34mm (RD-034) contain multi-coated glass optics while the 8x42mm (RD-842), 10x42mm (RD-034) and 10x50mm (RD-050) are fully multi-coated. Weighing less than a pound, the 8x26mm (RD-826) and 10x34mm (RD-034) are the more compact sizes of the RD Series making them easier to travel with and more ideal for hiking, backpacking, birding and travel. The 8x42mm (RD-842), 10x42mm (RD-034) and 10x50mm (RD-050) are the full-sized models making them great for numerous activities ranging from bird watching, hunting, sight-seeing, astronomy, surveillance, safaris and more. All RD Series binocular models are tripod mountable and come included with a hard case, lens covers, neck strap and a microfiber lens cloth. At Carson, we manufacture only the highest quality binoculars. We're so confident in our products that we back them with our No-Fault, No-Hassle Warranty.