Query: celestron prism

title: Dielectric Star Diagonal 1.25" with Twist Lock
text: Product Description Ensure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 1. 25” with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without replacing your telescope. This star diagonal reflects the telescope’s light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. The twist-lock eyepiece holder secures any 1. 25” eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The twist-lock has an integrated 1. 25” barrel stop that prevents 1. 25” accessories with long barrels from damaging the mirror. All the diagonal’s mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the barrel is glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 1. 25” with Twist-Lock is one of the highest quality 1. 25" star diagonals that Celestron has ever offered. The key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal. Product Description Ensure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 1. 25” with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without replacing your telescope. This star diagonal reflects the telescope’s light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. The twist-lock eyepiece holder secures any 1. 25” eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The twist-lock has an integrated 1. 25” barrel stop that prevents 1. 25” accessories with long barrels from damaging the mirror. All the diagonal’s mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the barrel is glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 1. 25” with Twist-Lock is one of the highest quality 1. 25" star diagonals that Celestron has ever offered. The key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal.From the manufacturer About Us Celestron has been one of the optics leader for decades, ever since Tom Johnson unveiled the game-changing C8. We strive to continue his legacy by continually developing exciting products with revolutionary technologies. Here, you can learn all about our patented, one-of-a-kind innovations.  

title: Astromania 1.25" 90-Degree Erecting Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp
text: Product Description Astromania 1.25" 90-degree Erecting Prism. This is an economical 1.25" 90-deg prism diagonal for astronomical telescopes and spotting scopes. With this 90-degree erecting prism transform your telescope into a telescope for nature observation. This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes.Please Note: This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. Not intended for use with reflector telescopes like Newtonian / Dobsonian reflector telescopes or other variants of Newtonian telescopes. Thread for 1.25” Filters Typically, you see the picture standing upside down. But what if you also want to observe nature? With this 90-degree erecting prism transform your telescope into a telescope for nature observation with upright and left-right corrected image. This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes. Dust Cover The Erecting Prism comes with dust cap and dust plug, which prevent dust from entering, for long-time use. Main Features: A 90 degree view High glossy finish appearance High optical lens transparency Excellent quality fully diagonal Material: metal and plastic Standard 1.25 " diameter erect&clear image Read more Exactly Correct Image Correct upside down and left-right reversed image easily;Wide 90 degree angle makes you view correct image from telescope stand and just look down with a comfortable angle More Clearer Image The Amici prism gives you a bright and clear picture: The prism is made of genuine optically processed BK7 glass, high quality optical prism inside rather than a mirror which makes your image clear and sharp. Thread for Eliminate Light Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed, the edge details of the image are clearer. Body Material The prism housing is made of precision molded ABS plastic and the two sleeves are made of metal - which ensures a tight fit and long grip. Use a clamping screw made of aluminum to fix your eyepiece. 90-Degree Comfortable Observation It can be used to observe objects with comfortable angle as you observe from above, it's convenient to look at the zenith of the sky and close to horizontal observation. Read more Read more 1.25" 90-Degree Erecting Prism 1.25" 45-Degree Diagonal Prism Optical Prism Inside 1.25" 90-Degree Diagonal Mirror 2" 90-Degree Mirror Diagonal with 93% reflectivity Across Visible Spectrum 2" 90-Degree Diagonal 99% Connection (to the telescope) 1.25" 1.25" 1.25" 2" 2" Viewing posture 90° 45° 90° 90° 90° Coating of optical system Fully Fully Fully Dielectric Dielectric Correction of vertically reversed image ✓ ✓ - - ✓ Correction of horizontally reversed image ✓ ✓ - - - Ring clamp - - - ✓ ✓ Filter thread ✓ ✓ ✓ ✓ ✓ Type of build Amici prism Amici prism Diagonal mirror Diagonal mirror Diagonal mirror Type Deviating optics Deviating optics Deviating optics Deviating optics Deviating optics Other contents - - - - Extension tube/2" to 1.25" Eyepiece Adapter From the brand Previous page Astromania Optics Visit the Store What's Hot Visit the Store Sales & Clearance Visit the Store Next page 

title: Celestron–Nature DX ED 10x42 Premium Binoculars–Extra-Low Dispersion Objective Lenses–Outdoor and Birding Binocular–Fully Multi-coated with BaK-4 Prisms–Rubber Armored–Fog & Waterproof Binoculars
text: Product Description Celestron’s award-winning Nature DX binoculars gets a major upgrade with the addition of premium ED objective lenses. Celestron’s high-quality ED glass delivers visibly brighter, sharper images compared to non-ED binoculars. The difference is especially noticeable in low light conditions, such as at dawn or dusk. Nature DX ED features fully multi-coated optics. The Nature DX ED is a great birdwatching binocular. Its fully multi-coated optics and BaK-4 prisms will maximize light transmission, resulting in remarkably bright, highly detailed image quality, and the ED objective lenses will further enhance these features, especially in dim light conditions. ED glass also helps you spot insects and plants at a close focus of just 6.5 feet. These premium binoculars together are suitable for eyeglass wearers and include a protective padded nylon case for easy storage and portability. Our Nature DX ED 10x42 model offers 10x magnification power. Despite its higher magnification, Nature DX ED 10x42 maintains a close focus of just 6.5 feet. Aim for quality sport optics and get your binoculars from Celestron, the world’s #1 leading telescope brand in the USA. Nearly 70 years on the market! Product Description Celestron’s award-winning Nature DX binoculars gets a major upgrade with the addition of premium ED objective lenses. Celestron’s high-quality ED glass delivers visibly brighter, sharper images compared to non-ED binoculars. The difference is especially noticeable in low light conditions, such as at dawn or dusk. Nature DX ED features fully multi-coated optics. The Nature DX ED is a great birdwatching binocular. Its fully multi-coated optics and BaK-4 prisms will maximize light transmission, resulting in remarkably bright, highly detailed image quality, and the ED objective lenses will further enhance these features, especially in dim light conditions. ED glass also helps you spot insects and plants at a close focus of just 6.5 feet. These premium binoculars together are suitable for eyeglass wearers and include a protective padded nylon case for easy storage and portability. Our Nature DX ED 10x42 model offers 10x magnification power. Despite its higher magnification, Nature DX ED 10x42 maintains a close focus of just 6.5 feet. Aim for quality sport optics and get your binoculars from Celestron, the world’s #1 leading telescope brand in the USA. Nearly 70 years on the market!From the manufacturer Nature DX ED 10x42mm Roof Prism Binoculars Nature DX ED is a favorite binocular among birders and outdoor enthusiasts worldwide. It offers an excellent combination of durable construction, quality construction, advanced features, and value. Read more FEATURES AND BENEFITS Superior Quality ED Glass Extra-Low Dispersion (ED) glass provides vivid, razor-sharp images virtually free of optical defects like chromatic aberration (color fringing). Fully Multi-coated Lenses Proprietary multi-coatings on every air-to-glass surface maximize light transmission. Phase-coated BaK4 Prisms Phase-coated, premium BaK4 prism glass ensures sharp, true-to-life color. Read more Comfortable & Eyeglass-friendly Durable twist-up eyecups are comfortable for everyone. Twist them up if you don’t wear glasses; leave them down if you do. Tripod Adaptable Add the optional Celestron tripod adapter to mount the binocular on a monopod or tripod for long periods of steady viewing. Waterproof & Fogproof Filled with dry nitrogen gas and sealed, the Nature DX ED is 100 percent waterproof and fogproof. Accessories Included Objective lens caps, eyepiece rainguard, neckstrap, carrying case, lens cloth, and an instruction manual all included. Read more Nature DX ED 10x42mm Roof Binoculars Nature DX ED 8x42mm Roof Binoculars Nature DX ED 10x50mm Roof Binoculars Nature DX ED 12x50mm Roof Binoculars Magnification: 10x 8x 10x 12x Objective Lens Diameter: 42mm (1.65”) 42mm (1.65”) 50mm (1.97”) 50mm (1.97”) Angular Field of View: 5.9° 7.5° 5.9° 4.8° Linear Field of View (@1000yds / @1000m): 309ft (103m) 393ft (129m) 309ft (103m) 252ft (84m) Eye Relief: 14.3mm (.56”) 17.8mm (.70”) 17.8mm (.70”) 14.3mm (.56”) Close Focus: 6.5ft (2m) 6.5ft (2m) 8.2 ft (2.5 m) 8.2 ft (2.5 m) Lens Coatings: Fully Multi-Coated Fully Multi-Coated Fully Multi-Coated Fully Multi-Coated Prism Glass (Type): BaK-4 BaK-4 BaK-4 BaK-4 Prism Coating: Phase Coated Phase Coated Phase Coated Phase Coated Protection: Waterproof Waterproof Waterproof Waterproof 

title: SVBONY 1.25 inches 90 Degree Zenith Mirror Diagonal Adapter Erect Image Fully Metal for Refracting Telescope Eyepiece Lens
text: From the brand Observation Discovery & Exploration Previous page Update your equipment Visit the Store Planetary Photography Visit the Store Deep Space Photography Visit the Store Deep Sky Visual Visit the Store Zoom Eyepiece Visit the Store Telescope Filter Visit the Store Telescope Camera Visit the Store Discovery & Exploration Visit the Store We are SVBONY, a young and passionate team of astronomy and sports optics products. We start from 2014, and our team are working for R&D practical optical products for people who want to get involved in nature and space exploration. Our products include Astronomy Telescope, Astronomy Camera, Astronomy Accessories, Microscope and more. We sincerely hope that under the influence of SVBONY, more people will fall in love with exploring the starry sky What makes our products unique? Behind the SVBONY products, there is a team in which everyone is creative, collaborative and responsible. We've made a niche category, the reason is that we want people to see more realistic images in the original way, instead of just upgrading the camera on the phone. Why do we love what we do? We do think optics products are practical and educational, which connects people to the world, not just for a small part of person, but for everyone. SVBONY leads us to a more beautiful world which we usually can’t see, and we want to bring this beauty to everyone. Next page Product Description The SVBONY fully metal 1.25" Mirrors Diagonal zenith mirror offers an upright figure which is but turned backward in left and right position. It is suitable in particular for astronomical observations. The mirror depicts clean and full of contrasts. The mirror is suitable for refractors, Celestron EQ, Meade Infinity and similar telescopes. It is not suitable due to the length reflectors for Newton. Includes Dustcaps for Storage Store your diagonal with two dust covers included for protection when you’re not observing Correct Upside Down Image Correct upside down reversed image easily; wide 90 degree angle makes you view correct image from telescope stand 90 Degree Comfortable Observation It can be used to observe objects with comfortable angle as you observe from above; it's convenient to look at the zenith of the sky and close to horizontal observation. Built-in Brass Ring Brass compression ring provides a uniform pressure receiving area when holding the eyepiece; fingertip screw clamps accessories effortless fixes more firmly and will not damage your eyepieces Built-in Matt Thread Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed, the edge details of the image are clearer Durable and Sturdy SVBONY 90 degree 1.25" diagonal mirror is made of fully metal, hard and durable, which is corrosion and rust resistance. Read more Read more Correct Upside Down Image --Correct upside down reversed image easily. This wide 90 degree angle makes you view correct image from telescope stand. --1.25" Star Diagonal Mirror accepts 1.25" eyepieces filters and other accessories with a 1.25” insert barrel --90 Degree diagonal mirror work with refractor telescopes with --1.25" connector; not recommended for use in Newtonian reflector or Dobsonian reflector telescopes Read more Package Includes: 1xFully Metal 1.25" Mirrors Diagonal 90-Degree 1x1.25" Dust Cover Read more Specifications: Connection eyepiece: 1.25" Connecting telescopic: 1.25" & 2" (2" need adapter) Clamp: 1 screw Reflectivity: 90% Housing material: Metal Suitable for: Refractors Net Weight: 142g / 5.0oz Not suitable for: Newtonians 

title: Baoblaze 1.25inch 2X Eyepiece Erecting for Orion Newtonian Reflective Telescope Lens Adapter Mirror Fully Multi-Coated Green Film

title: SVBONY Diagonal Adapter Zenith Diagonal Mirror Prism 1.25inch 45 Degree Erecting Prism Optical Prism Inside for Astronomical Telescope Eyepiece
text: From the brand Observation Discovery & Exploration Previous page Update your equipment Visit the Store Planetary Photography Visit the Store Deep Space Photography Visit the Store Deep Sky Visual Visit the Store Zoom Eyepiece Visit the Store Telescope Filter Visit the Store Telescope Camera Visit the Store Discovery & Exploration Visit the Store We are SVBONY, a young and passionate team of astronomy and sports optics products. We start from 2014, and our team are working for R&D practical optical products for people who want to get involved in nature and space exploration. Our products include Astronomy Telescope, Astronomy Camera, Astronomy Accessories, Microscope and more. We sincerely hope that under the influence of SVBONY, more people will fall in love with exploring the starry sky What makes our products unique? Behind the SVBONY products, there is a team in which everyone is creative, collaborative and responsible. We've made a niche category, the reason is that we want people to see more realistic images in the original way, instead of just upgrading the camera on the phone. Why do we love what we do? We do think optics products are practical and educational, which connects people to the world, not just for a small part of person, but for everyone. SVBONY leads us to a more beautiful world which we usually can’t see, and we want to bring this beauty to everyone. Next page Product Description SVBONY 45 degree erecting image diagonal prism for telescope and any standard 1.25" eyepiece Typically; from your telescope you see the picture standing upside down; If you want to observe nature; with this SVBONY 45-degree erecting prism transform your telescope into a telescope for nature observation,easily correct upside down and left-right reversed image. It’s easily correct upside down and left right reversed image;makes it easier to navigate the day and night skies with telescope in correct position You can insert it into the 1.25" telescope silver terminal;the other end with a screw fixed 1.25" eyepiece;it can also be used to observe astronomy;nebula;cluster;nebula scattered with high brightness and excellent optical properties Attentive design Use a clamping screw made of aluminum to fix your eyepiece. So you can even look sideways through your telescope - the eyepiece does not sit and fall out. From now on nature lies at your feet: even if it is far away. Comfortable observation with 45-degree It can be used to observe objects with comfortable angle; it's convenient to look at the zenith of the sky and close to horizontal observation. It produces an image that is oriented properly; which means the image is upright and correct from left to right. Read more High Quality The prism is made of genuine optically processed glass; high quality optical prism inside rather than a mirror which makes your image clear and sharp. Read more Anti-fall design The shape is an arc contour design, with a drop-resistant buffer space, if you accidentally drop it, you don't have to worry about damaging the optical prism inside Read more With dust cover The dust cover keeps the lens clean to extend the service life always keep your lens clear Super easy to use Simply insert the erecting prism into the 1.25 " telescope and enjoy upside down and left-right images with your eyepieces -Bird watching; watching the deer inside the forest; watch the scenery on the mountain or the cruise ship at sea. Package Includes: 1 X 1.25'' 45-Degree Zenith Mirror Read more Features: Body Material: Plastic Size: 2.1.25inch Observation angle: 45° Prism Type: K9 Optical Path Length: 85mm Dust Cover: Yes Screws: M3 Net Weight: 83g/0.18lb 

title: Visionking 1.25 inches Erecting Prism for Newtonian Reflector Astronomical Telescope
text: From the brand Visionking Opict Insist on providing innovative and high quality products for all customers. Previous page VISIONKING was established in 2003, specializing in the production of telescopes, observation mirror, spotting scopes, rangefinders, night vision,and have been leading in the industry with advanced technology and excellent quality. Visionking have professional scientific research team, first-class production process, excellent production equipment, advanced testing instruments and perfect testing technology. VisionKing Hunting Moon Watching Astronomical Bird Watching 1.25 inches Image Rectifier Range Finder Next page Product Description Advantages of visionking 1.Visionking erecting prism lens can solve the problem of upside-down imaging of the Newton astronomical telescope, and can see a clearer positive image 2. The image rectifier lens can provide 1.5X magnification, and adopts apochromatic optical design to maintain a clear image and a wide field of view 3. Compatible with all 1.25-inch eyepieces 4, All-metal aluminum alloy lens barrel, precision machining, durable 5. High-quality multi-coated optical glass lens: high light transmittance to ensure a clear and sharp vision 6.It also with standard M42x0.75mm thread for Astro-photography and SLR cameras. VISIONKING Newtonian Image Rectifier Lens NOTE,Each telescope has its own maximum capability of the telescope optics.And after the maximum, image get blurred.so the erecting prism lens is not the better the magnification,if erecting prism lens and telescope eyepiece are connected together for use, they need to control the effective rate range, in order to clear the effect of observation. Read more Multi-coated optical glass to make the image clearer and sharper Tip: We recommend using erecting prismlens on a short focal telescope to achieve the maximum effect of the telescope magnification to match the installation. When using erecting prism lens, the resulting image follows the following pattern: the smaller the value of the matching eyepiece, the larger the resulting image, but the brightness of the image will be dimmed. Please select the appropriate eyepiece mount to obtain the ideal image. Read more 

title: Celestron – Nature DX 8x42 Binoculars – Outdoor and Birding Binocular – Fully Multi-coated with BaK-4 Prisms – Rubber Armored – Fog & Waterproof Binoculars – Top Pick Optics
text: Product Description Proudly created with US engineering, the Nature DX 8x42 reveals image detail you won’t find with other beginners’ binoculars. The fully multi-coated lenses provide maximum light transmission through the entire optical path, resulting in brighter, sharper images even in low light conditions. The high-quality BaK-4 prisms are phase-coated to increase the contrast and resolution. Nearby subjects like plants and insects are easy to view with a close focus of just 6.5 feet. These binoculars also allow the pursuit of distant subjects with 8x magnification and 42 mm objective lenses to easily acquire and follow your subject, no matter the distance. The Nature DX 8x42 body has been specifically designed to endure your travels thanks to its lightweight polycarbonate housing, which protects the binocular from damage. The binocular is 100 percent waterproof and purged with nitrogen gas to prevent internal fogging of the lenses in wet conditions. Rubber armor ensures durability, and the twist-up eyecups with multi-stop function allow for proper positioning of the eyes, even for eyeglass wearers Buy with confidence from Celestron, based in California since 1960.. Product Description Proudly created with US engineering, the Nature DX 8x42 reveals image detail you won’t find with other beginners’ binoculars. The fully multi-coated lenses provide maximum light transmission through the entire optical path, resulting in brighter, sharper images even in low light conditions. The high-quality BaK-4 prisms are phase-coated to increase the contrast and resolution. Nearby subjects like plants and insects are easy to view with a close focus of just 6.5 feet. These binoculars also allow the pursuit of distant subjects with 8x magnification and 42 mm objective lenses to easily acquire and follow your subject, no matter the distance. The Nature DX 8x42 body has been specifically designed to endure your travels thanks to its lightweight polycarbonate housing, which protects the binocular from damage. The binocular is 100 percent waterproof and purged with nitrogen gas to prevent internal fogging of the lenses in wet conditions. Rubber armor ensures durability, and the twist-up eyecups with multi-stop function allow for proper positioning of the eyes, even for eyeglass wearers Buy with confidence from Celestron, based in California since 1960..From the manufacturer Nature DX 8x42mm Binocular Celestron’s mid-size, affordable favorite among birders and outdoor enthusiasts around the world. Previous page Great Mid-size Birding Binocular Get the right combination of magnification, field of view, and close focus distance for birding. Nature DX was named a Top Pick Under $200 by the Cornell Lab of Ornithology. Fully Multi-coated Lenses Phase-coated BaK4 prisms Fully multi-coated lenses provide high levels of well-managed light transmission while phase-coated, premium BaK4 prism glass ensures sharp, true-to-life color of observed subjects. Waterproof and Fog-proof Filled with dry nitrogen gas and sealed, the Nature DX can easily withstand rigorous outdoor use without internal fogging of the lenses. Comfortable and Eyeglass- Friendly Twist-up eyecups are comfortable to use and can be easily positioned for use with or without eyeglasses. Tripod Adaptable Use an optional Celestron tripod adapter to mount the binocular on a monopod or tripod for long periods of steady viewing. Next page Better Viewing Objective lens caps, eyepiece rainguard, neck strap, carrying case, lens cloth, and instruction manual all included. Compare these products Nature DX 8x42mm Nature DX 10x32mm Nature DX 8x32mm Nature DX 10x42mm Magnification 8x 10x 8x 10x Objective Lens Diameter 42mm (1.65”) 32mm (1.26”) 32mm (1.26”) 42mm (1.65”) Field of View (degrees) 7.4° 5.8° 7.4° 5.8° Field of View (feet @ 1000yds) 388 304 388 304 Lens Coatings Fully Multi-coated Fully Multi-coated Fully Multi-coated Fully Multi-coated Prism Glass (Type) BaK4 BaK4 BaK4 BaK4 IPD (mm) 56-74 56-74 56-74 56-74 Prism Coating Phase Coating Phase Coating Phase Coating Phase Coating Close Focus Distance (feet) 6.5 6.5 6.5 6.5 Eye Relief (mm) 18 14 17.5 14 Environmental Protection Waterproof Waterproof Waterproof Waterproof Tripod Adaptable Yes Yes Yes Yes 

title: Celestron – SkyMaster 25X70 Binocular – Outdoor and Astronomy Binoculars – Powerful 25x Magnification – Large Aperture for Long Distance Viewing – Multi-coated Optics – Carrying Case Included
text: Product Description Celestron’s Sky Master series of large aperture binoculars are a phenomenal value for high performance binoculars ideal for astronomical viewing or for terrestrial (land) use - especially over long distances. Each Sky Master model features high quality BaK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger Sky Master models to meet the special demands of extended astronomical or terrestrial viewing sessions. Product Description Celestron’s Sky Master series of large aperture binoculars are a phenomenal value for high performance binoculars ideal for astronomical viewing or for terrestrial (land) use - especially over long distances. Each Sky Master model features high quality BaK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger Sky Master models to meet the special demands of extended astronomical or terrestrial viewing sessions.From the manufacturer SkyMaster 25x70mm Porro Binocular A high-quality yet affordable choice for binocular astronomy or long-distance terrestrial viewing with large 70mm objective lenses and powerful 25x magnification. Previous page Bright, Sharp Images—Even in Dim Conditions Multi-coated optics and BaK-4 prisms deliver excellent light transmission for brighter images. The SkyMaster is a favorite among those who view in dim conditions near dawn and dusk, or for astronomy. Durable and Water Resistant The rugged, armored body provides protection and a secure gripping surface. Plus, the water-resistant exterior means you won’t have to worry about getting caught in an unexpected rainstorm. Comfortable & Eyeglass Friendly Soft, rubber eyecups are comfortable to use and block stray light. Eyeglasses wearers can fold down the eyecups for easier viewing. Tripod Adaptable Enjoy extended, hands-free viewing sessions by mounting your SkyMaster binocular on a tripod. Next page Compare these Products SkyMaster 25x70 SkyMaster 15x70 SkyMaster 12x60 SkyMaster 20x80 Magnification12x 25x 15x 12x 20x Field of View (degrees) 2.7° 4.4° 5.3° 3.7° Field of View (feet @ 1000yds) 141 231 278 195 Lens Coatings Multi-coated Multi-coated Multi-coated Multi-coated Prism Material BaK4 BaK4 BaK4 BaK4 Diopter Range -4 to +8 -4 to +8 -4 to +8 -4 to +8 Close Focus Distance (feet) 75 43 59 108 Eye Relief (mm)17 13 18 17 18 Eyecup Folding Folding Folding Folding Environmental Protection Water Resistant Water Resistant Water Resistant Water Resistant Tripod Adaptable Yes Yes Yes Yes 

title: Celestron 71380 Granite Series 9x33 Roof Prism Binocular (Black)
text: Product Description Celestron Granite Series Roof Prism Binoculars are the pinnacle of optical and mechanical design. Granite offers all the features you'd expect from a top-of-the-line binocular, including ED (Extra Low Dispersion) glass. The ED objective lenses and fully multi-coated optics provide excellent sharpness and color correction, while virtually eliminating chromatic aberration. Granite also features BaK-4 prisms with dielectric and phase coating to increase light transmission and overall image quality. Product Description Celestron Granite Series Roof Prism Binoculars are the pinnacle of optical and mechanical design. Granite offers all the features you'd expect from a top-of-the-line binocular, including ED (Extra Low Dispersion) glass. The ED objective lenses and fully multi-coated optics provide excellent sharpness and color correction, while virtually eliminating chromatic aberration. Granite also features BaK-4 prisms with dielectric and phase coating to increase light transmission and overall image quality.From the manufacturer Granite ED 9x33mm Binocular ED glass objective lenses plus premium coatings throughout make the Granite ED Celestron’s top performing binocular. Previous page ED Objective Lenses 33mm ED objective lenses virtually eliminate chromatic aberration for sharply defined colors and high resolution views, even in poor light conditions. Go Green with Granite ED’s Glass & Premium Coating Lead and arsenic free multi-coated lenses plus phase & dielectric coated BaK4 prisms yield eco-conscious superior optical performance. Tripod Adaptable Use an optional Celestron tripod adapter to mount the binocular on a monopod or tripod for long periods of steady viewing. Comfortable and Eyeglass- Friendly Twist-up eyecups are comfortable to use and can be easily positioned for use with or without eyeglasses. Waterproof / Fog-proof Filled with dry nitrogen gas and sealed, the Granite ED can easily withstand rigorous outdoor use without internal fogging of the lenses. Next page Better Viewing Objective lens caps, eyepiece rainguard, deluxe carrying harness, padded neck strap, carrying case, lens cloth, and instruction manual are all included. Compare These Products 9x33 Granite ED 10x42 Granite ED 10x50 Granite ED 12x50 Granite ED Magnification 9x 10x 10x 12x Field of View (degrees) 7.2° 6.5° 6.5° 5.3° Field of View (feet @ 1000yds) 378 340 341 280 Lens Coatings Fully Multi-coated Fully Multi-coated Fully Multi-coated Fully Multi-coated Prism Glass (Type) BaK-4 BaK-4 BaK-4 BaK-4 Prism Coating Phase Coating Phase Coating Phase & Silver Coatings Phase & Silver Coatings IPD (mm) 56-73 56-73 56-73 56-73 Close Focus Distance (feet) 5.9 8.2 9.8 9.8 Eye Relief (mm) 14.1 15.2 16.9 15 Eyecup Twist-up Twist-up Twist-up Twist-up Environmental Protection Waterproof Waterproof Waterproof Waterproof Tripod Adaptable Yes Yes Yes Yes 

title: Celestron – UpClose G2 10x50 Binocular – Multi-coated Optics for Bird Watching, Wildlife, Scenery and Hunting – Porro Prism Binocular for Beginners – Includes Soft Carrying Case
text: Product Description The UpClose G2 10x50 Porro Binocular is a great example of high-quality build and materials with an easy, intuitive design. Our 10x50 binoculars are ideal for birdwatching, nature and wildlife viewing, hunting, travel and adventures, boating, concerts, and live events. The Celestron UpClose G2 10x50 Porro features multi-coated glass optics that increase light transmission, resulting in brighter and sharper images with high contrast levels. These 10x50 powerful binoculars feature high-quality BK-7 Prism Glass that increases contrast and resolution and lenses that provide 10x magnification power, allowing the easy pursuit of targets no matter the distance. The UpClose G2 10x50 Porro body has been carefully conceived to resist damage from traveling, water and heavy use. It has a convenient and lightweight aluminum housing, which protects these water-resistant binoculars from weather damage. Rubber armor ensures durability, soft folding eyecups are comfy to use with or without eyeglasses, and ergonomic thumb indents are included for extra non-slip hold. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960. You’ll also receive a Limited Lifetime warranty and unlimited access to technical support from our team of US-based experts. Product Description The UpClose G2 10x50 Porro Binocular is a great example of high-quality build and materials with an easy, intuitive design. Our 10x50 binoculars are ideal for birdwatching, nature and wildlife viewing, hunting, travel and adventures, boating, concerts, and live events. The Celestron UpClose G2 10x50 Porro features multi-coated glass optics that increase light transmission, resulting in brighter and sharper images with high contrast levels. These 10x50 powerful binoculars feature high-quality BK-7 Prism Glass that increases contrast and resolution and lenses that provide 10x magnification power, allowing the easy pursuit of targets no matter the distance. The UpClose G2 10x50 Porro body has been carefully conceived to resist damage from traveling, water and heavy use. It has a convenient and lightweight aluminum housing, which protects these water-resistant binoculars from weather damage. Rubber armor ensures durability, soft folding eyecups are comfy to use with or without eyeglasses, and ergonomic thumb indents are included for extra non-slip hold. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960. You’ll also receive a Limited Lifetime warranty and unlimited access to technical support from our team of US-based experts.From the manufacturer UpClose G2 10x50 mm Binocular Great all-purpose 10x50 mm Porro prism binocular for an even better price. Read more Features And Benefits Strong and Bright 10x magnification combines with 50 mm objective lenses for close-up, bright images. Multi-coated Lenses Multi-coated lenses provide bright and clear images with exceptional contrast. Mid-sized Chassis Low weight makes this full-size binocular as easy to carry and easy to use as most mid-sized models. Fully Armored Exterior Durable external armor protects the binocular against the rigors of active use. Read more Comfortable & Eyeglass Friendly Soft, folding eyecups are comfortable to use and can be easily positioned for use with or without eyeglasses. Tripod Adaptable Mount the UpClose G2 10x50 mm on a tripod for hours of hands-free viewing convenience. Essential Accessories Included Carrying case, objective covers, eyepiece covers, lens cloth, and instruction manual all included. Read more 71256 71252 71250 71258 Magnification 10x 8x 7x 20x Field of View (degrees) 6.8° 8.2° 9.2° 3.2° Field of View (feet @ 1000yds) 354 429 483 168 Lens Coatings Multi-coated Multi-coated Multi-coated Multi-coated Prism Material BK-7 BK-7 BK-7 BK-7 IPD (mm) 56-72 56-72 56-72 56-72 Close Focus Distance (feet) 23 19 13 42 Eye Relief (mm) 12 12 13 7 Eyecup Yes Yes Yes Yes Environmental Protection Water Resistant Water Resistant Water Resistant Water Resistant Tripod Adaptable Yes Yes Yes Yes 

title: Celestron – Outland X 8x25 Binoculars – Waterproof & Fogproof Binoculars – Compact Binoculars for Adults – Multi–Coated Optics and BaK–4 Prisms – Protective Rubber Armoring
text: Product Description Celestron's mid-sized Outland X Series was designed to meet the needs of every outdoor enthusiast. Multi-coated optics help obtain the highest resolution and contrast views, while the prisms made of BaK-4 glass provide you with sharp and enhanced color fidelity for an exceptional viewing experience. A protected rubber-coated exterior allows for rough and tough handling in all-weather environments, as it provides extra protection from outdoor elements as well as a secure, anti-slip gripping surface. Your Outland X binoculars will last for years to come! Comfortable straps have been pre-attached to the binoculars for easy ready-to-go use, and the objective lens covers are semi-attached so they don't get lost. Tripod adapter threads are also included in case you’d like to attach your binocular to an adapter and tripod (sold separately) for extended viewing sessions. All in all, this binocular offers a lightweight, ergonomic form factor designed for maximum comfort. The Outland X is a great birdwatching binocular for adults. Our binoculars include a wide, comfortable binocular strap and a soft, moisture-resistant neoprene carrying case. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960. Enjoy your new Celestron Outland X binoculars! Product Description Celestron's mid-sized Outland X Series was designed to meet the needs of every outdoor enthusiast. Multi-coated optics help obtain the highest resolution and contrast views, while the prisms made of BaK-4 glass provide you with sharp and enhanced color fidelity for an exceptional viewing experience. A protected rubber-coated exterior allows for rough and tough handling in all-weather environments, as it provides extra protection from outdoor elements as well as a secure, anti-slip gripping surface. Your Outland X binoculars will last for years to come! Comfortable straps have been pre-attached to the binoculars for easy ready-to-go use, and the objective lens covers are semi-attached so they don't get lost. Tripod adapter threads are also included in case you’d like to attach your binocular to an adapter and tripod (sold separately) for extended viewing sessions. All in all, this binocular offers a lightweight, ergonomic form factor designed for maximum comfort. The Outland X is a great birdwatching binocular for adults. Our binoculars include a wide, comfortable binocular strap and a soft, moisture-resistant neoprene carrying case. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960. Enjoy your new Celestron Outland X binoculars!From the manufacturer Outland X 8x25 Binocular From the trail to the ballpark to the concert hall, Outland X is your ideal all-around binocular. Enjoy crisp, detailed views and dependable performance. Previous page Grab-and-Go Convenience Not much larger than an average smartphone, the Outland X 8x25 is your hassle-free companion on all of life’s adventures. Multi-coated Optics and BaK4 Prisms Premium BaK4 prism glass and multi-coatings on the lenses combine to provide exceptional optical performance. Waterproof and Fog-proof Filled with dry nitrogen gas and sealed, Outland X can easily withstand rigorous outdoor use without internal fogging of the lenses. Durable and Armored The rugged, armored exterior provides protection from the elements along with a secure gripping surface. Comfortable & Eyeglass Friendly Twist-up eyecups are comfortable to use and can be easily positioned for use with or without eyeglasses. Next page Better Viewing A neck strap, durable carrying case, lens cloth, and instruction manual are all included. Compare these Products Outland X 8x25 Outland X 10x25 Outland X 8x42 Outland X 10x42 Magnification 8x 10x 8x 10x Field of View (degrees) 8.2° 6.3° 6.8° 5.6° Field of View (feet @ 1000yds) 430 330 357 294 Lens Coatings Multi-coated Multi-coated Multi-coated Multi-coated Prism Material BaK4 BaK4 BaK4 BaK4 IPD (mm) 56-72 56-72 56-74 56-74 Close Focus Distance (feet) 13.1 19.7 13.1 14.8 Eye Relief (mm) 10 10 18 14 Eyecup Twist-up Twist-up Twist-up Twist-up Environmental Protection Waterproof Waterproof Waterproof Waterproof Tripod Adaptable No No Yes Yes 

title: Celestron – Ultima 65 Angled Spotting Scope – 18-55x Zoom Eyepiece – Multi-coated Optics for Bird Watching, Wildlife, Scenery and Hunting – Waterproof and Fogproof – Includes Soft Carrying Case
text: Product Description The Celestron Ultima 65 series was designed to perform well in a range of viewing situations. Outdoor enthusiasts and adventurers will love it for observing nature and sharp long-distance spotting. The 65mm refractor features excellent multi-coated optics packed into a portable and durable housing and includes a powerful 18-55x zoom eyepiece. The Ultima spotting scope is completely waterproof and fogproof. It’s been filled with dry nitrogen gas and sealed to prevent internal fogging of the lenses. You’ll be able to enjoy your viewing activities to the fullest even during extreme weather conditions! The Ultima 65 angled spotting scope also includes a T-mount adapter for digiscoping; this allows you to capture bright, sharp images through your spotting scope. Simply attach your DSLR camera equipped with a T-ring, and you’re ready to go! Each Celestron optical product is engineered for the highest performance, durability, and quality in its class. Celestron optics provide you with a lifetime of viewing enjoyment at an unbeatable value! Buy with confidence from the world’s #1 telescope brand and a leading sport optics brand, based in California since 1960. You’ll also receive a Limited Lifetime warranty and unlimited access to technical support from our team of US-based experts. Product Description The Celestron Ultima 65 series was designed to perform well in a range of viewing situations. Outdoor enthusiasts and adventurers will love it for observing nature and sharp long-distance spotting. The 65mm refractor features excellent multi-coated optics packed into a portable and durable housing and includes a powerful 18-55x zoom eyepiece. The Ultima spotting scope is completely waterproof and fogproof. It’s been filled with dry nitrogen gas and sealed to prevent internal fogging of the lenses. You’ll be able to enjoy your viewing activities to the fullest even during extreme weather conditions! The Ultima 65 angled spotting scope also includes a T-mount adapter for digiscoping; this allows you to capture bright, sharp images through your spotting scope. Simply attach your DSLR camera equipped with a T-ring, and you’re ready to go! Each Celestron optical product is engineered for the highest performance, durability, and quality in its class. Celestron optics provide you with a lifetime of viewing enjoyment at an unbeatable value! Buy with confidence from the world’s #1 telescope brand and a leading sport optics brand, based in California since 1960. You’ll also receive a Limited Lifetime warranty and unlimited access to technical support from our team of US-based experts.From the manufacturer Ultima 18-55x65mm Angled Spotting Scope A great all-around spotting scope that’s compact and portable, with a comfortable 45-degree viewing angle. Previous page Your Trusted Companion in the Field Outdoor enthusiasts of all stripes count on Ultima for observing nature and long-distance viewing. Its rugged, armored exterior provides protection against hard use in the ﬁeld. Multi-coated Optics Fully multi-coated lenses provide high levels of light transmission, so you can enjoy brighter images even when ambient lighting conditions are dim. Waterproof and Fog-proof Venture into rainy conditions with conﬁdence; your Ultima scope is waterproof. It’s also ﬁlled with dry nitrogen gas and sealed, so you don’t need to worry about internal fogging of the lenses. Fast and Easy to Use The large focus dial lets you bring your subject into razor sharp focus before it moves away. The included zoom eyepiece helps you zero in for detailed views of distant subjects in seconds. T-Mount Adapter for Digiscoping Have you ever wanted to capture images through your spotting scope? Ultima includes a T-Mount adapter, so you can attach your DSLR camera with an optional T-ring. Next page Better Viewing Extend plate, zoom eye piece with integrated T-adapter, carrying case, eyepiece lens cap, eyepiece port cover, eyepiece carrying case, eyepiece pouch, lens cloth, instrument manual included. Compare these Spotting Scopes Ultima 65-45 Degree Scope Ultima 65 Straight Scope Ultima 80-45 Degree Scope Ultima 80 Straight Scope Magniﬁcation 18x-55x 18x-55x 20x-60x 20x-60x Field of View (degrees) 1.7°-0.7° 1.7° - .73° 2.0°-1.0° 2.0°-1.0° Field of View (feet @ 1000yds) 89-38 89-38 105-53 105-53 Lens Coatings Multi-coated Multi-coated Multi-coated Multi-coated Prism Material BaK4 BaK4 BaK4 BaK4 Close Focus Distance (feet) 20 20 26.2 26.2 Eye Relief (mm) 18 18 18 18 Eyecup Folding Folding Folding Folding Environmental Protection Waterproof Waterproof Waterproof Waterproof T-mount Adapter Yes Yes Yes Yes Tripod Mount Fixed Fixed Fixed Fixed 

title: Celestron 1.25" Star Diagonal, Black (94115-A)
text: Product Description The Celestron 1.25” Star Diagonal slides into the focuser (1.25”) of your refractor or catadioptric telescope and accepts standard 1.25” eyepieces, allowing you to view objects more comfortably. A diagonal that is angled at 90º helps avoid neck strain when looking through through the eyepiece. Please note that a 90º diagonal will display images that are right side up, but left to right orientation will be reversed. Product Description The Celestron 1.25” Star Diagonal slides into the focuser (1.25”) of your refractor or catadioptric telescope and accepts standard 1.25” eyepieces, allowing you to view objects more comfortably. A diagonal that is angled at 90º helps avoid neck strain when looking through through the eyepiece. Please note that a 90º diagonal will display images that are right side up, but left to right orientation will be reversed.

title: Celestron Erect Image Prism for Refractor and Schmidt Cassegrain
text: Product Description Did you know that most telescopes work well for daytime viewing as well as for astronomy? If you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect-image diagonal. If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two. This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch. Luckily, this is an easy problem to correct. Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Celestron 45º Erect Image Diagonal. Now, when you insert an eyepiece, objects will be right side up and left-to-right correct. The 45º angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position. Please Note: Adding an erect-image diagonal to a Newtonian reflector will not result in images that are right side up and left-to-right correct. The optical design of a Newtonian will always produce images that are rotationally off in orientation. This does not mean that you can’t use a Newtonian reflector during the day, it just means that you have to get used to objects oriented in unrealistic positions. Product Description Did you know that most telescopes work well for daytime viewing as well as for astronomy? If you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect-image diagonal. If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two. This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch. Luckily, this is an easy problem to correct. Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Celestron 45º Erect Image Diagonal. Now, when you insert an eyepiece, objects will be right side up and left-to-right correct. The 45º angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position. Please Note: Adding an erect-image diagonal to a Newtonian reflector will not result in images that are right side up and left-to-right correct. The optical design of a Newtonian will always produce images that are rotationally off in orientation. This does not mean that you can’t use a Newtonian reflector during the day, it just means that you have to get used to objects oriented in unrealistic positions.From the manufacturer About Us Celestron has been one of the optics leader for decades, ever since Tom Johnson unveiled the game-changing C8. We strive to continue his legacy by continually developing exciting products with revolutionary technologies. Here, you can learn all about our patented, one-of-a-kind innovations. 

title: Celestron – TrailSeeker 8x42 Binoculars – Fully Multi-Coated Optics – Binoculars for Adults – Phase and Dielectric Coated BaK-4 Prisms – Waterproof & Fogproof – Rubber Armored – 6.5 Feet Close Focus
text: Product Description The Celestron TrailSeeker provides high-level outdoor performance, which makes it the perfect choice for avid birders or hunters. The TrailSeeker offers a close focus of just 6.5 feet along with a wider field of view to bring subjects into view more quickly and hold them there more easily. Phase and dielectric-coated BaK-4 prisms will dramatically increase light transmission through the prism system for impressive image quality and resolution. The TrailSeeker is a great bird watching binoculars for adults. Thanks to its durable and lightweight magnesium alloy body frame, which is fully waterproof and fogproof to withstand any type of weather conditions, you can enjoy it even during foggy and rainy days! The TrailSeeker also features a 6.5' close-up focus for detailed and sharp observation of any subject in close proximity. You’ll be happy to know that the purchase of our Celestron TrailSeeker 8x42 Binocular also includes an objective lens cap, rainguard, a neck strap, a harness strap, a carrying case, a lens cloth, and an instruction manual. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960. Product Description The Celestron TrailSeeker provides high-level outdoor performance, which makes it the perfect choice for avid birders or hunters. The TrailSeeker offers a close focus of just 6.5 feet along with a wider field of view to bring subjects into view more quickly and hold them there more easily. Phase and dielectric-coated BaK-4 prisms will dramatically increase light transmission through the prism system for impressive image quality and resolution. The TrailSeeker is a great bird watching binoculars for adults. Thanks to its durable and lightweight magnesium alloy body frame, which is fully waterproof and fogproof to withstand any type of weather conditions, you can enjoy it even during foggy and rainy days! The TrailSeeker also features a 6.5' close-up focus for detailed and sharp observation of any subject in close proximity. You’ll be happy to know that the purchase of our Celestron TrailSeeker 8x42 Binocular also includes an objective lens cap, rainguard, a neck strap, a harness strap, a carrying case, a lens cloth, and an instruction manual. Buy with confidence from the world’s #1 telescope brand and a leading sport optics manufacturer, based in California since 1960.From the manufacturer TrailSeeker 8x42 mm Binocular Superb optical performance in a sleek and stylish lightweight chassis; perfect for birders! Read more FEATURES AND BENEFITS Outstanding Birding Binocular Ideal combination of magnification, field of view, and close focus distance for birding. Fully Broadband Multi-coated Lenses Fully broadband multi-coated lenses provide high levels of optimally-managed light. Premium Prism Coatings Phase & dielectric coated BaK4 prisms provide brilliant true color and sharply defined images. Tripod Adaptable Use a Celestron tripod adapter to mount the binocular on a monopod or tripod for long periods of hands-free viewing. Read more FEATURES AND BENEFITS Comfortable & Eyeglass Friendly Twist-up eyecups are comfortable to use and can be easily positioned for use with or without eyeglasses. Waterproof / Fog-proof Filled with Nitrogen and sealed, the TrailSeeker can easily withstand rigorous outdoor use. Multiple Accessories Included Objective lens caps, eyepiece rainguard, neck strap, harness strap, carrying case, lens cloth, and instruction manual are all included. Read more TrailSeeker 8x42 mm Binocular TrailSeeker 8x32 mm Binocular TrailSeeker 10x32 mm Binocular TrailSeeker 10x42 mm Binocular Magnification 8x 8x 10x 10x Field of View (degrees) 8.1° 7.8° 6.2° 6.5° Field of View (feet @ 1000yds) 426 409 325 341 Lens Coatings Fully broadband multi-coated lenses Fully broadband multi-coated lenses Fully broadband multi-coated lenses Fully broadband multi-coated lenses Prism Material Phase and Dielectric-coated BaK4 Phase and Dielectric-coated BaK4 Phase and Dielectric-coated BaK4 Phase and Dielectric-coated BaK4 IPD (mm) 55-73 56-73 56-73 55-73 Close Focus Distance (feet) 6.5 6.5 8.2 6.5 Eye Relief (mm) 17 15.6 14.4 15 Eyecup Twist-up Twist-up Twist-up Twist-up Environmental Protection Waterproof Waterproof Waterproof Waterproof