Overview
The Steiner Military-Marine Series Binoculars are the civilian version of Steiner's proven military binoculars, designed for rugged all-around use. They provide sharp, clear, and battle-worthy optical performance. With higher magnification and larger objectives, these binoculars are ideal for observing in open terrain, hilly country, and for spotting subjects in low-light conditions.

Figure 1: The Steiner Military-Marine 10x50 Binoculars, showcasing their robust design.
Key Features
Military Optics for Civilians
These binoculars feature 10x magnification and a 302ft wide field of view, providing sharp images in an easy-to-handle design. They are built to deliver precision optics suitable for various civilian applications, drawing from military-grade standards.

Figure 2: User observing through the Steiner Military-Marine Binoculars in a field setting.
Sports Auto Focus System
The Sports Auto Focus system ensures that once focused, images remain sharp and brilliant from 20 yards to infinity without requiring constant refocusing. This feature is particularly beneficial for dynamic observation scenarios.
Video 1: This video highlights the key features of the Military-Marine binoculars, including the Sports Auto Focus system, demonstrating its functionality and benefits for clear viewing.
Floating Prism System
Equipped with a Floating Prism System, these binoculars utilize flexible silicone lens mounts. This design absorbs severe shock, impact, and abuse, protecting the internal optical components from damage and ensuring long-term performance even in demanding environments.
Makrolon Housing
The binoculars feature a durable Makrolon housing, constructed from robust polycarbonate with NBR rubber armoring. This combination creates a lightweight yet rugged chassis capable of withstanding up to 11 Gs of impact. The housing is impervious to harsh conditions, ensuring the longevity of the device for generations of use.

Figure 3: The binoculars are shown on damp ground, illustrating their durable and waterproof construction.
Waterproof and Fog Resistant Clarity
The design ensures the binoculars are fully waterproof and fog-resistant, maintaining clear vision in diverse weather conditions. This critical feature prevents internal fogging and protects against water ingress, making them reliable in wet or humid environments.
Video 2: This video demonstrates the Military-Marine binoculars in a hunting context, showcasing their robust build and clear optics in various outdoor conditions, including potential exposure to moisture.
Setup
Unpacking
Carefully remove the binoculars and all accessories from the packaging. Inspect for any visible damage. Retain the packaging for future storage or transport.
Attaching the Neck Strap
Thread the provided neck strap through the strap lugs on each side of the binocular body. Ensure the strap is securely fastened and adjusted to a comfortable length for carrying.
Adjusting Interpupillary Distance
Hold the binoculars up to your eyes. Adjust the distance between the two barrels by moving them closer or further apart until you see a single, clear circular field of view. This ensures proper alignment with your eyes.
Initial Focus Adjustment (Sports Auto Focus)
The Sports Auto Focus system provides a fixed focus from 20 yards to infinity. For initial setup, look through the binoculars at a distant object. If necessary, make minor adjustments to the individual diopter settings on each eyepiece to achieve optimal clarity for your vision. Once set, no further focusing is typically required for objects within the specified range.
Operating Your Binoculars
Viewing Technique
Bring the binoculars to your eyes, ensuring the interpupillary distance is correctly set. Scan the area of interest. The 10x magnification will bring distant objects closer, while the wide field of view allows for broad observation.
Utilizing Sports Auto Focus
With the Sports Auto Focus, simply point the binoculars at your target. Objects from 20 yards to infinity will appear sharp without manual adjustment. This allows for quick target acquisition and continuous observation without interruption.
Low-Light Performance
The large 50mm objective lenses are designed to gather ample light, providing bright and clear images even in challenging low-light conditions, such as dawn, dusk, or heavily overcast days.
Maintenance and Care
Cleaning Lenses
Use a soft, lint-free cloth specifically designed for optical lenses. Gently wipe away dust or smudges. For stubborn marks, use a small amount of lens cleaning fluid applied to the cloth, not directly to the lens. Avoid abrasive materials or excessive pressure.
Cleaning Housing
The Makrolon housing and rubber armoring can be cleaned with a damp cloth and mild soap if necessary. Rinse with clean water and dry thoroughly. Do not use harsh chemicals or solvents.
Storage
When not in use, store the binoculars in their protective case in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure lens caps are in place to protect the optics.
Troubleshooting
Blurred Image
- Ensure the interpupillary distance is correctly set for your eyes.
- Verify individual diopter settings on each eyepiece are adjusted for your vision.
- Clean the objective and eyepiece lenses if smudges or dust are present.
- Confirm the target is within the Sports Auto Focus range (20 yards to infinity).
Double Image
- Adjust the interpupillary distance until the two fields of view merge into one.
- If the issue persists after adjusting, the binoculars may require professional servicing.
Fogging
- External fogging can be wiped away with a soft cloth.
- Internal fogging indicates a seal compromise. Contact customer support for assistance, as the binoculars are designed to be fog-resistant.
Specifications
| Feature | Detail |
|---|---|
| Brand | Steiner |
| Model Number | 2035 |
| Magnification | 10x |
| Objective Lens Diameter | 50 Millimeters |
| Field of View | 302 ft (at 1000 yards) |
| Product Dimensions | 9.8 x 11.4 x 4.9 inches |
| Item Weight | 2.2 pounds |
| Special Features | Lightweight, Waterproof, Sports Auto Focus |
| Housing Material | Makrolon with NBR rubber armoring |
| First Available Date | August 15, 2017 |

Figure 4: A comparison chart detailing various models within the Military-Marine series, including the 10x50 model's specifications.
Warranty and Support
Heritage Warranty
Steiner stands behind its products with a Heritage Warranty. This warranty covers repair or replacement of defective products at no charge for the lifetime of the product. Please note that the warranty does not cover damage, loss, or theft.
For detailed warranty terms and conditions, or to initiate a warranty claim, please refer to the official Steiner website or contact their customer service department.
Customer Support
For any questions, technical assistance, or support regarding your Steiner Military-Marine Binoculars, please visit the official Steiner website or contact their customer support team. Contact information can typically be found in the product packaging or on the manufacturer's website.




