The 10x50 3D Series ED Binocular from Carson combines extra-low dispersion (ED) glass elements and BAK4 prisms to transmit bright images that are rich with contrast and detail. Phase-correction prism coatings minimize color fringing while enhancing image clarity. This 3D Series binocular is configured with 50mm objectives, offering better light gathering ability than other standard size optics in the series. An o-ring sealed and nitrogen-filled housing enable fogproof and waterproof performance in humid and wet conditions. Textured rubber armor adds impact-resistance and helps the viewer maintain their grip while wearing gloves.