Waterproof, & nitrogen-purged to prevent fogging, the Echelon 20x 70 binoculars by Celestron are perfect for low light observation & astronomy. Constructed from lightweight aluminium alloy, the binoculars have a durable rubber armour covering for a slip-free grip & added protection, & boast superior Ba K-4 prisms for maximum contrast & sharpness. They are h&-assembled in the USA & utilise Celestron's proprietary XLT coating technology for amazing optical performance. As well as this, the 3.5mm exit pupil means that the Celestron Echelon 20x 70 Binoculars will allow you to see amazing details, even in the shadows. The 20x 70 binoculars offers the highest magnification in the Echelon series, & are perfect for viewing small subjects at long distances, or celestial objects.