Celestron 71454 Echelon 20x70 Binoculars (Black) Enjoy low light observing with these large-aperture 70 mm binoculars. Their 3.5 mm exit pupil allows you to see amazing detail, even in the shadows. Also great for astronomy! Fully waterproof for protection against the elements and nitrogen-purged to prevent internal fogging Hand-assembled in the USA from high quality Japanese optics, using Celestrons proprietary XLT coating technology for superior optical performance Includes a durable, waterproof hard case for protection Tripod adaptable for long observing sessions or when you want to share the view with others