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Vanguard 8x25 Vesta Binoculars feature moderate magnification and comfortable eye relief distance and exit pupil diameter to make this an ideal optic for hiking, general nature watching, and getting close-up looks at architectural details of building and skyscrapers. Optically, they are made with compact BAK4 roof prisms and anti-reflection Multiguard multi-coated lens surfaces to boost the light-gathering ability and produce bright and clear high-contrast images with accurate color representation. To withstand the rigors of the outdoors, the chassis is made of a lightweight and durable material, and each optical tube is sealed to be waterproof and resistant to internal fogging, so the binoculars will continue to perform in even the most inclement of weather. The Vesta is wrapped in a protective rubber armor to provide a slip-resistant grip, even when it's cold and wet. Their large center focusing wheel is set low on the bridge, so while they are easy to manipulate, even when wearing gloves, they present a low profile. With a total weight of just 1/2 pound and an ergonomic compact form factor, the Vesta can easily fit in most packs and pockets for transport and won't weigh you down when hanging around your neck, for fast glassing on the trail, in the woods, or sightseeing around the world. Optical Performance Moderate 8x power magnifies subjects and provides a comfortable exit pupil 25mm objective lenses maintain a slim form factor Compact BAK4 roof prisms deliver a round exit pupil and a crisp and clear image with limited edge distortion Proprietary anti-reflection Multiguard multi-coatings produce accurate color fidelity and improve overall contrast and image brightness 343-foot field of view at 1000 yards Use and Handling Closed-bridge configuration provides a stable platform for the internal focusing mechanism Large center focusing wheel is easy to manipulate—even when wearing gloves—and set low on the bridge to reduce the profile and snag hazard ±4 right eye dioptric correction allows precise focusing to individual eye prescriptions Broad 56-74mm interpupillary distance adjustment range allows use by users of all sizes Twist-up click-stop rubber eyecups for comfortable use with or without eyewear 12.5mm eye relief improves viewing comfort and reduces eyestrain Comfortable 3.1mm exit pupil Construction Details Lightweight and durable chassis Rubberized armor provides a slip-resistant grip, especially in wet conditions Sealed to be waterproof and resistant to internal fogging when moving through extreme temperature changes Compact form factor is less than 4.5 inches long to easily fit in most packs and pockets Lightweight design is about 1/2 pound to make it easier to carry and comfortable to hold up to the eyes