Fully coated lenses and BK-7 prisms round out the list of features on one of Tasco most powerful zooms. The versatile full size essentials 16 x 50 mm. Porro Prism binoculars gets you close to the action with the flick of a finger. The rugged, weather-resistant design makes these ideal for sporting events or any outdoor activity. The multicoated optics deliver clear, crisp Images. Features: - multicoated lenses - weather-resistant housing includes: - case & eye covers specifications: - 16x magnification - 50mm objective lens - BK-7 Prism - color: black.