Waterproof, & nitrogen-purged to prevent fogging, the Echelon 16x 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 4.4mm exit pupil means that the Celestron Echelon 16x 70 Binoculars will deliver an incredible amount of light, allowing you to see as much detail as possible. The 16x 70 model offers the next to highest magnification in the Echelon series, & are great for astronomy & bringing small subjects into view even at long distances.