UNITED 8-73113 Binoculars Coated Optics X50

( Brand: United ), ( Manufacturer Part Number: 8-73113 ), ( Type: Binoculars ), ( Unit Type: Unit ), ( Lens Coating: Coated ), ( Objective Lens Diameter: 50 Mm ), ( Maximum Magnification: 20x ), ( Application: Birding, General Purpose ), ( Country Of Origin: Japan )

Review UNITED Vintage Binoculars Made In Japan X50 Coated Optics No

The **United 8-73113 20x50 Coated Optics Binoculars** represent a robust and versatile choice for enthusiasts seeking high-performance optics without the premium price tag of flagship brands. Engineered with a **20x magnification** and **50mm objective lenses**, these binoculars deliver an impressive field of view, making them ideal for birdwatching, wildlife observation, stargazing, and casual outdoor adventures. The **fully multi-coated optics** ensure superior light transmission and clarity, reducing glare and enhancing contrast, which is particularly beneficial during low-light conditions or when observing distant subjects. The **porro prism design** not only provides a classic, ergonomic shape but also contributes to a more stable image, reducing handshake-induced blur compared to some modern roof prism models. Built with a durable **aluminum housing**, these binoculars are resistant to wear and tear, making them suitable for rugged use in various environments. The **waterproof and fog-proof construction** (sealed with O-rings) ensures reliability in changing weather, while the **non-slip rubber armoring** offers a secure, comfortable grip even when extended for prolonged viewing sessions. With a **close focus distance of just 10 feet**, these binoculars excel at spotting fine details in close quarters, whether it s identifying flowers, examining insects, or enjoying a leisurely nature walk. The **diopter adjustment** accommodates individual eye differences, ensuring a crisp, personalized view for both the dominant and non-dominant eye. Whether you're scanning the horizon for distant birds, exploring the cosmos, or simply enjoying a sunset from a scenic overlook, the **United 8-73113** combines practicality, performance, and affordability, making it a standout option for both beginners and seasoned observers.

The **United 8-73113 20x50 Coated Optics Binoculars** are a mid-range option designed for stargazing, birdwatching, and casual observation. Below is a detailed breakdown of their pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Strong Magnification (20x)**

- The 20x magnification provides a detailed and close-up view of distant objects, making them suitable for stargazing, observing wildlife, or viewing events like sports or concerts. This level of magnification is ideal for those who want a more immersive experience than lower-power binoculars (e.g., 10x or 12x).

2. **Large Objective Lenses (50mm)**

- The 50mm objective lenses gather significantly more light than smaller lenses (e.g., 42mm or 32mm), which improves visibility in low-light conditions such as nighttime stargazing or dawn/dusk birdwatching. This makes them more versatile for outdoor activities compared to smaller binoculars.

3. **Coated Optics**

- The coatings on the lenses (likely multi-coated) reduce glare and improve light transmission, resulting in clearer and brighter images. This is particularly beneficial for astronomical use, where light pollution can be an issue.

4. **Affordable Price Point**

- Compared to high-end brands like Zeiss, Swarovski, or Nikon, the United 8-73113 offers a more budget-friendly option without sacrificing too much in terms of performance. This makes them accessible to hobbyists or those who don t require professional-grade optics.

5. **Durable Construction**

- The binoculars appear to be built with a sturdy rubber armor coating, which provides a good grip and some protection against minor impacts or weather exposure. This is a common feature in mid-range binoculars designed for outdoor use.

6. **Compact and Portable**

- At 20x magnification, these binoculars are relatively compact for their power level, making them easier to carry than larger, heavier models (e.g., 25x or 30x binoculars). They are suitable for travel or casual use.

7. **Wide Field of View**

- The 20x50 specification often includes a relatively wide field of view (compared to higher magnification binoculars), which helps in tracking moving objects like birds or aircraft without losing them from the view.

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### **Cons**

1. **Image Stability Challenges**

- Higher magnification (20x) amplifies hand shake, making it difficult to keep the image steady without a tripod or stable surface. This can be frustrating for prolonged use, especially in low-light conditions where fine details are harder to discern. The lack of image stabilization (common in budget binoculars) is a notable drawback.

2. **Potential for Lower Image Quality**

- While the coatings improve light transmission, the overall optical quality may not match premium brands. Some users report that the images can appear slightly softer or less sharp at the edges, especially at maximum magnification. The glass quality and lens coatings can vary between budget binoculars, and this model may not be exception-free.

3. **Limited Low-Light Performance**

- Although the 50mm lenses gather more light than smaller lenses, the image quality in very low-light conditions (e.g., deep night sky) may still be limited compared to dedicated astronomical binoculars or telescopes. The exit pupil (calculated as objective lens diameter divided by magnification: 50mm / 20x 2.5mm) is on the smaller side, which can make the image dimmer for some users.

4. **Weight and Fatigue**

- The combination of high magnification and large lenses makes these binoculars heavier than smaller models (e.g., 10x42 or 8x42). Prolonged use can lead to arm fatigue, especially if you re not using a tripod or resting them on a surface.

5. **Limited Eye Relief**

- Eye relief (the distance between your eye and the eyepiece for a full field of view) may be shorter than in some higher-end binoculars. This can be uncomfortable for users who wear glasses, as they may need to pull the eyepieces out to accommodate their prescription.

6. **Build Quality Variability**

- While the rubber armor provides some protection, the overall build quality of budget binoculars can sometimes feel less premium. The focus wheels and eyecups may not be as smooth or durable as those in higher-end models, and the internal mechanisms might require occasional maintenance.

7. **Not Ideal for Daytime Use Without a Tripod**

- The high magnification makes these binoculars less practical for daytime use without stabilization. For activities like birdwatching or sports, lower magnification (e.g., 8x or 10x) is often more practical because it provides a wider field of view and easier tracking.

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### **Conclusion**

The **United 8-73113 20x50 Coated Optics Binoculars** are a solid choice for hobbyists who prioritize magnification and light-gathering ability for stargazing, nighttime observation, or casual outdoor activities. They offer a good balance of performance and affordability, making them accessible to those who want a step up from basic binoculars without breaking the bank. However, their high magnification comes with trade-offs, including image stability issues, potential softness in image quality, and discomfort during prolonged use without support.

- Stargazing and astronomical observation.

- Nighttime wildlife or birdwatching.

- Casual use where magnification is a priority over ease of use.

- Daytime activities requiring wide fields of view (e.g., sports, hiking).

- Users who need image stabilization or plan to use them for extended periods without a tripod.

- Those who prioritize ultra-sharp, high-contrast images and are willing to invest in premium optics.

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### **Recommendation**

If you are primarily interested in **stargazing or low-light observation** and are willing to accept the limitations of high magnification (e.g., needing a tripod, potential image softness), the **United 8-73113 20x50** is a reasonable purchase. They offer excellent value for the price and will provide a satisfying viewing experience for their intended purposes.

However, if you plan to use the binoculars for **daytime activities, birdwatching, or need a more stable and comfortable viewing experience**, consider lower magnification models (e.g., 10x50 or 8x42) or investing in a pair with image stabilization (e.g., some models from Celestron or Nikon). For astronomical use, you might also explore dedicated astronomical binoculars or telescopes, which are optimized for deep-sky viewing.

Ultimately, if your budget allows, spending a bit more on a mid-range brand (e.g., Celestron Nature DX, Vortex Diamondback) could yield better overall performance and durability. But for the price, the United 8-73113 is a practical and capable option for specific use cases.

Details:

Made In Japan, TT No.8-73113, Please examine all photos as they are considered part of the. I sell to the USA only. Vintage UNITED 20 x 50 Binoculars with Leather Case, strap, and 4 lens caps.

part #: 873113 prices

• $34.99-$75.00

specifications binoculamonocul:

• brand: United
• mpn: 8-73113
• type: Binoculars
• unit type: Unit
• lens coating: Coated
• objective lens diameter: 50 Mm
• maximum magnification: 20x
• application: Birding, General Purpose
• country of origin: Japan

payments binoculamonocul:

• credit card: Mastercard
• wallet: Apple-pay
• other

seller binoculamonocul:

• rating: 100.0%
• city: Traverse City, Michigan
• # reviews: 1513

general binoculamonocul:

• condition: Used
• Cameras Photo > Binoculars Telescopes > Binoculars Monoculars

offer binoculamonocul:

• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: March 12, 2026
• sold: 0

returns binoculamonocul:

• policy: No Returns

shipping binoculamonocul:

• cost: $9.84
• type: Calculated
• transit: 4-8 Days
• service: USPS Ground Advantage
• carrier: USPS
• class: Standard

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