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General
Product Name: Oceana 7 x 50 Marine Binoculars with Illuminated Compass
Brand: Celestron
Model Number: 71189-A
Color: Black
Imaging
Magnification: 7 times
Objective Lens Diameter: 50 millimeters (Generally, the larger the diameter of the objective lens, the greater the light-collecting power and the brighter images will appear.)
Field of View at 1000 yards: 394 feet (The area of a target, measured horizontally from the location of viewing, that can be observed.)
Close Focusing Distance: 33 feet (The closest distance the user can be from an object to obtain a clear, focused view through the lens.)
Features
Size: Full Size
Prism Type: Porro (Prisms ensure the proper horizontal and vertical orientation of the view. There are two main types: roof and Porro. Roof prisms, typically more expensive than the alternative, have a more streamlined design due to their glass elements being in line with one another. Porro prisms, though they contribute to a larger form factor, typically provide a wider field of view than roof prisms.)
Tripod Mountable: Yes
Eyecup Type: Other (In addition to blocking peripheral light, adjustable eyecups can limit or expand the field of view as well as promote comfort for the user.)
Exit Pupil: 7.1 millimeters (The diameter of the beam of light that travels through the lens to the user's eye. Generally, the larger this measurement, the greater the relative brightness and detail of the image.)
Lens Coating: Multilayer coated (Chemical coatings on a lens reduce reflective light loss and improve light transmission. The different coating levels indicate the number of anti-reflective layers and the lens surfaces to which they're applied, ranging from coated (the most basic) to fully multi-coated (typical of high-end optics).)
Focus System: Center (The most common binocular focusing system is center focus, which features a centered wheel or lever (InstaFocus) between the barrels, and usually additional diopter adjustment. Individual focus binoculars allows each eyepiece to be adjusted independently.)
Eye Relief: 22 millimeters (The maximum distance between the eyepiece lens and user's eye at which the full field of view can be seen.)
Performance
Maximum Depth Of Water Resistance: 0 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
Protective Qualities: Water resistant
Casing Material: Other
Camera
Integrated Digital Camera: false
Dimensions
Product Height: 7 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
Product Width: 4 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
Product Weight: 2.5 pounds (The out of box weight of the item.)
Other
UPC: 050234711890
These marine binoculars feature a horizontal and vertical etched reticle to help determine the relative size of distant objects and a water-resistant design to prevent water damage. The multicoated lenses provide optimal contrast.
Backlit illuminated liquid-dampened magnetic compass: Helps you find where you're going.
Horizontal and vertical etched reticle: Along with a range-finding dial to calculate actual object size and distance.
Water-resistant design: Prevents water damage and resists internal fogging.
7x magnification: To bring your subject close with a clear view.
394' at 1000 yards field of view: Lets you see a wide area.
Multicoated optics: For optimum brightness.
BAK-4 prisms: Provide enhanced color fidelity.
Attached objective caps: For safe transport and storage.
Nautical-style padded canvas case: Along with straps allows easy portability.
Tripod adapter: For simple tripod mounting.
Whats Included
Celestron Oceana 7 x 50 Marine Binoculars with Illuminated Compass