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ED (Extra-Low Dispersion) glass reduces chromatic aberration, which causes color fringing. This results in clearer and sharper images with improved color fidelity, allowing you to view distant objects in remarkable detail.
Fully multi-coated lenses mean that all air-to-glass surfaces have multiple layers of anti-reflective coatings. These coatings reduce light loss and glare due to reflection, providing a brighter, clearer image with higher contrast.
The twist-up/down eyecups allow you to adjust the eye relief, which is the distance from the eyepiece to your eye while still seeing the full field of view. This feature makes the binoculars comfortable for both eyeglass and non-eyeglass wearers.
The 6.9-degree angle of view refers to the width of the observable field at a distance of 1,000 yards. A wider angle of view provides a larger area visible through the binoculars, which is beneficial for scanning landscapes or tracking moving objects.
Yes, the high-definition optics, combined with the 8x magnification and fully multi-coated lenses, make these binoculars suitable for stargazing. They allow for clear and detailed observation of celestial bodies.
Review Summary
Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.
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8x
42mm
15mm
5mm
366
10' (3.04m)
Fully-Multi
Green
23.3 oz (660g)
793139230164


For outdoor enthusiasts and nature observers, the 8x42 SII Blue Sky HD Series Waterproof Roof Prism Binocular is an innovative and reliable choice. This high-quality binocular, with its stylish green finish, is designed to withstand the elements, making it perfect for birdwatching, hunting, or stargazing in any weather condition.
This model is an extension of the highly popular SIIBL 32MM series, now enhanced with Extra-Low Dispersion (ED) glass for top-tier performance. The ED glass ensures superior clarity and color fidelity, allowing you to view distant objects in remarkable detail. This feature, combined with the high 8x magnification, makes this binocular an excellent tool for observing wildlife or exploring the night sky.
The SII Blue Sky HD Series binoculars are not only durable but also lightweight, making them easy to carry during outdoor adventures. The waterproof feature adds to its durability, ensuring it can withstand wet or rainy conditions without compromising its performance.
The binoculars are equipped with fully multi-coated lenses, which maximize light transmission for brighter, clearer images. The dielectric coatings and phase-coated prisms further enhance performance by eliminating light interference and increasing light transmission. This results in a wide field of view with a 6.9-degree angle, perfect for scanning the environment.
The twist-up and twist-down eyecups are a thoughtful addition, catering to both eyeglass and non-eyeglass wearers. This feature ensures comfortable viewing and optimal eye relief, enhancing your viewing experience.
In conclusion, the 8x42 SII Blue Sky HD Series Waterproof Roof Prism Binocular is a high-performance, economical choice for all your outdoor viewing needs. Whether you're birdwatching, hunting, or stargazing, this binocular is ready to deliver exceptional results.
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