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Description
SIRUI Beyond B1042B-MD Rangefinding Binoculars For Hunting & ObservationAccurate & Quick Beyond Series 10x42 Laser Rangefinding Binoculars B1042B MD GN Green B1042B MD BK Black B1042B MD 10x42 Laser Rangefinding Binoculars 10X High Magnification Accurate Measurement LCD High Transmittance Screen Multi layer Coating IP67 Waterproof 1 4 20 Threaded Hole SIRUI Beyond Series Laser Rangefinding Binoculars features outstanding optical performance and precise distance measurement with the ranging capacity of 1800m. Clear data,
Accurate & Quick
Beyond Series 10x42 Laser Rangefinding Binoculars
B1042B-MD-10x42
Laser Rangefinding Binoculars
10X High Magnification
Accurate Measurement
LCD High Transmittance Screen
Multi-layer Coating
IP67 Waterproof
1/4”-20 Threaded Hole
SIRUI Beyond Series Laser Rangefinding Binoculars features outstanding optical
performance and precise distance measurement with the ranging capacity of 1800m. Clear data, such as
distance and angle is shown on the LED high transmittance screen. And the automatic power off design
helps use less power. Solid built outside and convenient operation binoculars is born for long-distance
observation and accurate measurement, such as hunting, adventure, bird watching, geological prospecting,
building surveying, etc.
Accurate Measurement
Binoculars is designed with ranging capacity of 1800m/2000yd. Besides, the
tested information and what you are watching will come into view at the same time. It also features
fast measurement speed and angle measurement, suitable for long-distance observation and accurate
measurement such as wildlife observation, forestry surveying, building surveying, etc.
Wide Field of View
Field of view (FOV) is the area or range of what can be seen or captured
by a device or sensor. The wider the FOV, the more the set is visible.The FOV of SIRUI B1042B
binoculars is 114.3m@1000m, which means you can see a circular area of 114.3m diameter when the
object is 1000m away. Wide FOV is perfect for capturing moving object.
Field of View
114.3m @1000m
LCD
High Transmittance Screen
High Transmittance Screen
Viewing and measuring at the same time.
1
Distance
2
Straight-line Distance
3
Scan Mode
4
Central Circle
5
Distance Unit
6
Angle
7
Horizontal Distance
*The binoculars measurement can only be used during the day-time because
the display screen is black.
905nm Laser Wavelength
Focus on details such as flagpole, electric wire, golf ball, etc.
Outstanding Optical System
ED glass is usually added to high quality optical products to guarantee
perfect optical performance. So you can get high quality sharp image with well-controlled
dispersion.
ED Glass
Standard Glass
ED Glass
Standard Glass
Almost focus on the same point
Not focus on the same point
Virtually eliminate chromatic aberration
Apparent chromatic aberration
Sharp image with better contrast
Present fringes
BAK4 Prism
BAK4 is a type of high-density glass. BAK4 prisms are made of a higher
quality glass than the lower-cost BK7 prisms that are sometimes used in binoculars. The higher
quality glass used in BAK4 prisms results in a brighter and clearer image, especially suitable for
viewing in low-light situations.
BAK4 Prism
Multi-layer Coating
Multi-layer coating glasses with anti-reflective surface provide higher
light transmittance up to 92.5%.
Lens Protector
Solid quality construction with anti-scratch and anti-fouling coating.
High Magnification
BAK4 prism allows users to view clear images with well-controlled
chromatic aberration and accurate color.
10X Magnification
42mm Large Objective Lens
21mm Eyepiece
6.52° FOV
Wine Red Coating
Wine red coating glasses help reduce reflectivity, suitable for hiding
during military action. It also reduces flare and ghost, delivering clear and sharp image.
Less flare and ghost
Sharp image
Low reflectivity
IP67 Waterproofing
Nitrogen Filling
Nitrogen Filling
Brilliant anti-fogging and waterproof performance in extreme conditions.
Working Temperature: -15°C ~+60°C
Name of Part
Two Colors
*Optional SIRUI SP124+B5X+BA-2 Tripod Kit
*Optional SIRUI SPD04+G5X+BA-2 Tripod Kit
Multiple Scenarios
Protable body for outdoor carrying
Patrol
Power Inspection
Engineering Project
Security and Protection
Geological Prospecting
Hydraulic Engineering
Forestry Surveying
Territorial Surveying and Mapping
Golf Measuring
Distance Measuring
Long-Distance
Observation
Observation
SIRUI Promise to Provide All Customers with
VIP Warranty Service of Optical Products
VIP Warranty Service of Optical Products
1. If the optical element of your product is defective or damaged, we
will provide you with limited free warranty or replace the damaged one. (If we are not able to
repair your product, we will replace it with a product that has the same or better physical
condition.)
2. Two years warranty for electronic part from the date of purchase. And
we will provide you with free repair or replacement. (If we are not able to repair your product, we
will replace it with a product that has the same or better physical condition.)
3. We provide lifetime warranty for factory defective products. If the
product is damaged artificially, you have to pay for the repair. The start date of the warranty is
subject to the proof of purchase. Does not cover loss, theft, deliberate damage, unauthorized
service or cosmetic damage that doesn't hinder performance.
What’s in the Box
1. Colorful Box
2. Laser Rangefinding Binoculars
3. Carrying Bag
4. Lens Cloth
5. Warranty Card
6. Cleaning Bag
7. Battery
8. Eyepiece Protection Cap
9. Objective Lens Protection Cap
10. Strap
Specifications
Name
Beyond Series 10X42 ED Laser Rangefinding Binoculars
Magnification
10X
Eyepiece Diameter (mm/inch)
φ 21 / φ 0.83
Objective Lens Diameter (mm/inch)
φ 42 / φ 1.65
FOV
114.3m@1000m / 342.9ft@1000yd
Exit Pupil Diameter (mm/inch)
φ 4.2 / φ 0.17
Exit Pupil Distance (mm/inch)
15 / 0.59
Light Transmission
92.47% (Left) / 89.49% (Right)
Distortion
5.94%
Relative Brightness
18.06
Twilight Factor
20.49
Laser Wavelength
905nm
Laser Emission Power
＜1 mw
Laser Class
CLASS I
Display Screen
Black LCD High Transmittance Display Screen
Ranging Accuracy
±0.5 m
Angle
±90°
Battery
CR2*1
Maximum Measuring Distance
Building: 1800m / 2000yd
Minimum Measuring Distance
5m
Maximum Focus Distance
∞
Minimum Focus Distance
3m
Interpupillary Adjustment
56~73mm / 2.2~2.87 inch
Diopter Adjustment
＞-5~+5D
Weight (g/lb)
756 / 1.67
Dimensions (mm/inch)
146*111*51 / 5.75*4.37*2.01
Storage Temperature
-15~60℃
Operation Temperature
-10~60℃
Waterproofing
IP67
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
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Product Reviews
★★★★★ 5
Best liner socks EVER
Size: Medium, Color: (348) Silica Green / Silica Green / Hydro Green
I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Great socks
Size: Medium, Color: Pink - 647
Well-made and comfortable to wear. Great for golf and other outdoor activities. Like them because they do not show above shoes.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed.
I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood).
Overall: high recommend based on my experience so far!
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Reviewed in the United States on September 13, 2025
★★★★★ 5
Great fit!
Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke
Great quality!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
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Reviewed in the United States on April 25, 2026