The 10x56 Nature DX Binoculars from Celestron are a general-purpose set of glasses featuring a fully multicoated optical path and a weather-resistant housing. By combining multi-layer coated lenses with high-transmission BAK4 prism glass, Nature DX series binoculars produce bright images that are rich with contrast and sharpness. A nitrogen-filled housing provides fogproof and waterproof performance and non-slip rubber armoring help the observer maintain their grip in wet conditions or while wearing gloves. Additionally, twist-up eyecups and 18.2mm eye relief allow this set of binoculars to create a comfortable viewing distance for almost any viewer.