Eyeskey 8-24 X 42 HD Zoom Monocular BAK4 Prism with Smartphone Holder Camera Low Night Vision Multi-Resistant Coating Hiking Outdoor Hunting and Fishing Silicon Rubber Spectralite ABS+PC #7412374
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Overview Reviews(10) Recommendations
Overview Reviews(10) Recommendations


Brand Introduction: Hangzhou Eyeskey Optical Instrument Co., Ltd. was founded in 2009 in order to help you develop a passion for the wonders of observing.The company is specialized in the designing, manufacturing and selling of binoculars and other optical instruments.Boasting of a dedicated development team, state-of-the-art production technology, we are capable of offering the best services and quality products of high levels to all our clients.

Selling Points

Compatibility: Bird watching Hunting
Maximum Useful Magnification: 24
Objective Lens (mm): 42
Field of View (m): 78.6-40.1
Prism Type: BAK4
Optical Coating: Fully Multi-coated


Compatibility: Camera, Fishing, Bird watching, Hunting, Material: ABS+PC, Spectralite, Silicon Rubber, Features: Low Night Vision, Multi-Resistant Coating, with Camera, Zoomable, Activity: Traveling, Hiking, Hunting and Fishing, Camping / Hiking / Caving, Outdoor Exercise, Structures: Monocular, Resolution (PPI): 335, Magnification: 8-24, Maximum Useful Magnification: 24, Minimum Focus Distance (m): 2, Objective Lens (mm): 42, Field of View (m): 78.6-40.1, Field Range (°): 4.5-2.3, Prism Type: BAK4, Focus System: Independent Focus, Interpupillary Adjustment (mm): 10, Maximum IPD: 69.5, Minimum IPD: 59.5, Optical Coating: Fully Multi-coated, Eyecups: Twist-up, Tripod Mount: No, Finderscope: No, Motor: No, Temperature (°C): 5-35, Net Weight (kg): 0.725, Waterproof Level: NA, Max Read Speed (Mb/S): 60,


Learn More About This Product

  1. How to Choose Binoculars

  • 1.Choosing binoculars for the first time

    About Magnification: For the first time, we recommend magnifications between 6x to 10x for handheld outdoor use.The higher the magnification, the narrower the real field of view. If the magnifications are identical, the larger the value of real field of view, the wider the field of view.

    About Eye Relief: Choose binoculars with eye relief of at least 10mm. 15mm or longer eye relief binoculars are recommended for eyeglass wearers.

    About Waterproof & Fogproof:You may experience different weather and temperatures in outdoor activities, we recommend you choose a waterproof and anti-fog binoculars there is no need to warry about a sudden rain or temperature change.

    2.Choosing binoculars by size

    Full-Size (common specs: 8 x 42, 10 x 50):

    Best for serious wildlife viewing and for use on boats. Full-size binoculars capture more light and perform better in low-light situations. They usually provide steadier images and a wider field of view, so they're great for bird watching, but they're a litter big and heavy for backpacking.

    Mid-Size (common specs: 7 x 35, 10 x 32):

    Best all-around choice for wildlife and sports use. While a bit heavy for backpacking, these binoculars balance moderate size and above-average light transmission.

    Compact (common specs: 8 x 25, 10 x 25):

    Best for daytime outdoor activities. These are the lightest, smallest binoculars for backpacking, but they’re less comfortable during extended periods of use.

    3.Choosing binoculars by scenes

    For Bird Watching: We recommend magnification of 8x to 12x for forests,lakes and marshes.The objective lens40mm to 50mm is recommended. If the effective diameter of the objective lens is 50mm,maybe you need to use a tripod as they may cause unstable image and uncomfortable viewing due to shaking by hand movement.

    For Outdoor / Travel: If you’re watching outdoor nature, we recommend magnification of 8x to 10x. If viewing the scenery or distant buildings is your main interest, we recommend magnification of 4x to 8x. Zoom binoculars come in handy if you want to see objects both near and far.

    For Concerts: We recommend magnification of 7x to 10x. For concert halls, we recommend magnification of 4x to 8x.

    For Stargazing: We recommend a magnification around 7x to 10x,an effective diameter of about 40mm to 50mm. With larger diameter, we recommend the use of a tripod to stabilize binoculars as larger diameter of the objective lens may cause unstable image and uncomfortable viewing due to shaking by hand movement.

Frequently Asked Questions

  1. Q: What is night vision for the optical telescopes?
  • A:Night vision is the ability to see in low light conditions. Whether by biological or technological means, night vision is made possible by a combination of two approaches: sufficient spectral range, and sufficient intensity range.

    Night vision technologies can be broadly divided into three main categories: image intensification, active illumination and thermal imaging. The Optical telescopes use the principle of Image intensification to achieve the function of night vision.

    Image intensification magnifies the amount of received photons from various natural sources such as starlight or moonlight. Therefore, under low-light conditions, through the optical telescope we can only see the fuzzy image, except for the stars. We call it "Low Light Night Vision".
  1. Q: What Do the Numbers on the Binoculars Mean?
  • A:Binoculars are identified by 2 numbers. The first number is their magnification (or zoom/power) and the second number is the diameter of their lenses. For example, 10×50 binoculars will have 10x magnification and 50 mm objective lenses.

    A magnification power of 10 means that an object will appear 10 times closer than it would to your unassisted eye. For example, if you view a deer that stands 1000m away from you through 10x binoculars, it will appear as though it were 100m away (1000 divided by 10).
  1. Q: What is the Best Lens Size?
  • A:Binoculars with larger lenses (40mm to 50mm) can gather more light and therefore produce brighter images. They work better in low light settings such as dawn, dusk, fog, rain etc. Compact binoculars have smaller lenses which gather less light. They are much lighter and portable and therefore suitable for hiking, mobile use or when you need to travel light.
  1. Q: What is the Field of view ?
  • A:This spec tells you the width of the area that you can view at a glance, 1,000m from where you stand. For example,if the Field of view is 122m/1000m,What you see is shown in the following picture: FAQ
  1. Q: What is the BAK4 Prism?
  • A:BAK4 is a material with a higher refractive index than BK7. It can effectively avoid vignetting, reduce astigmatism and ghosting, enhance light transmittance, and make the image color more vivid. It is often used in high-end telescopes. BK7 is called general optical glass, and dark edges are usually formed around the imaging, so that the brightness of the image is lost, and the color reproduction is also significantly impaired.
  1. Q: What is the Fully multi-coated (FMC) ?
  • A:Multiple coatings on all lens surfaces. Fully multi-coated lenses are typical of high-end optics. The objective lens is made of the Fully multi-coated (FMC), which will make the color reproduction balance and can control the glare and ghosting of the picture well. Even in the background of backlight, you can clearly see the picture in the shadow.

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