Prism material:BAK4. BAK4 prism and multi-coated lens for improved light transmission and image clarity. Keep a proper exit pupil distance with the eyepiece. If the stickers are too close or too far away, you will feel dark shadows in the field of view when observing, and you will not be able to get a complete circle of vision.
eBay
HD Astronomy Telescope for Kids and Beginners, 500000X Zoom, Ideal for Observing Deep Space and Stargazing
Aliexpress UK
Zonadah Monocular, Super Zoom Telescope
eBay
6pcs Plastic Pirate Telescopes Pirate Party Cosplay Halloween Monocular Telescopes Toys Telescopic Pirate Telescopes for Kids
Aliexpress UK
Prism material:BAK4. BAK4 prism and multi-coated lens for improved light transmission and image clarity. Keep a proper exit pupil distance with the eyepiece. If the stickers are too close or too far away, you will feel dark shadows in the field of view when observing, and you will not be able to get a complete circle of vision.
eBay
Red 70-445mm Multi-Slot Dovetail Base For Universal Finder/Guider Mount Adapter for Telescopes Stargazer Mounting Slot
Aliexpress UK
Features:-With 10x magnification and a large 25mm objective lens, it provides clear and sharp images, and a large field of view of 1000 meters for excellent details, so you can observe many things without changing your position.-The objective lens adopts multi-layer green FMC broadband film and the eyepiece adopts blue FMC coating, which can achieve 99.5% light transmittance, giving you a good image and providing you with an extraordinary experience.-The BAK4 prism has good light transmittance, glare reduction, color rendering and contrast, no dark edges, bright images, and night vision in low-light conditions (it can be used at night, but not in complete darkness).-A large central focus knob and diopter adjustment ring make it easy to focus on your target. .
eBay
CamVintagePro™ Vintage - Inspired Security Camera Sign | Multipurpose Home & Bar Decoration | Ideal Gift Option
Aliexpress UK
The Monocular Telescope 10x Fixed Magnification by Starscope is a compact, high-quality monocular designed for general purpose use. With a maximum magnification of 10x, it is perfect for observing distant objects with clarity and precision. The sleek black design adds to its elegant and portable appeal, making it ideal for nature explorers, birdwatchers, and stargazers alike. Trust in the Starscope brand for top-notch optics and reliability in your outdoor adventures.
eBay
BORWOLF AZ80500 Astronomy Telescopes for Adults, 80mm Aperture 500mm AZ Mount 250X HD for Moon Stargazing and Bird Watching
Aliexpress UK
You will surely enjoy the superior image clarity while using this pair of 30x60 binoculars. It has a unique prism design which will give you clear and brighter view.
eBay
Mini Pocket Hd Wide-angle Monocular Scope Zoom Telescope Handy Optics Scope for Outdoor Camping Travel Hunting Oculares Telescop
Aliexpress UK
Feature: 1.Higher Refractive Index: Low-light night vision, the refractive index of BAK4 light is higher than that of BK7, which can effectively avoid dark edges and make the image clearer. 2.36mm Large Objective Lens: The larger the caliber, the more light entering the telescope, then imaging becomes clearer and clearer. 3.HD Optical Glass Lens: The all-optical glass lens can effectively increase the light transmittance of the lens, increase the picture clarity, and enhance the color reproduction. 4.Light and Portable: Light and small, this binocular is portable for daily use. Specification: .
eBay
40X60 Monocular Telescope Optical Zoom Spotting Scope FMC BAK4 Long Range Outdoor Portable Bird Watching Target Telescope 16x52
Aliexpress UK
8-24 x 30mm.
eBay
TeSeek CYCK Telescope Modification Kit Secondary Mirror Spider DIY Kit for SkyWatcher 10-inch 250mm Telescopes（As option shown
Aliexpress UK