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Description
SIRUI Beyond B1042A Binoculars For ObservationDecent View into Your Eyes Beyond Series 10x42 ED Binoculars Beyond Series 10x42 ED Binoculars 10X High Magnification 20mm Eyepiece BAK4 Prism Multi layer Coating IPX7 Waterproofing+Nitrogen Filling 1 4 20 Threaded Hole 10X Golden Range 8 10x magnification is commonly recognized as the golden range for binoculars, balancing image quality and usability. Higher magnification can lead to reduced image clarity. 10X Magnification Wide field of view and
Decent View into Your Eyes
Beyond Series 10x42 ED Binoculars
Beyond Series 10x42 ED Binoculars
10X High Magnification
20mm Eyepiece
BAK4 Prism
Multi-layer Coating
IPX7 Waterproofing+Nitrogen Filling
1/4”-20 Threaded Hole
10X Golden Range
8-10x magnification is commonly recognized as the “golden range” for binoculars, balancing image quality and usability. Higher magnification can lead to reduced image clarity.
10X Magnification
Wide field of view and high image quality.
20mm Large Eyepiece for
Better Experience
Better Experience
20mm Large Eyepiece
Detailed insights
Bright image
Clear subject
＜20mm Small Eyepiece
Less detail
Dim image
Blurred subject
42mm Large Objective Lens
The larger the objective lens is, the more the light goes in, perfect for observing bright image.
Wide Field of View
Wide FOV is suitable for capturing moving object, ideal for outdoor adventure, birding watching, moon watching, etc.
Outstanding
Optical Performance
Optical Performance
Designed with 4 pieces of ED glass and 2 pieces of high refractive index glass.
Color-accurate and excellent image with minimal dispersion around.
Obvious dispersion and blurred image.
Multi-layer Coating
Inner multi-layer coating increases light transmission, achieving overall transmittance rate of up to 88.5%.
LensProtector
Solid quality construction with anti-scratch and anti-fouling coating.
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
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.
IPX7 Waterproofing Nitrogen Filling
Hermetically sealed barrels with IPX7 waterproofing and
nitrogen filling ensure protection against water and fog,
making them reliable in all outdoor conditions.
Caps Together
-15~60℃
Working
Temperature
Working
Temperature
-20~60℃
Storage
Temperature
Storage
Temperature
View the Details
from Your Phone
from Your Phone
Mount the binoculars on SIRUI tripod and mount your phone on the binoculars via TS-M telescope mobile phone adapter to
capture details from your phone with ease.
SP124+B5X+BA-2
TS-M1 Telescope Mobile Phone Adapter
*Accessories except the binoculars are sold separately.
Name of Part
Details
01.
Center Focusing Wheel
Rotate the center focusing wheel to easily focus.
02.
Right Eyepiece Focusing Ring
Rotate the eyepiece focusing ring until the image is sharp.
03.
Eyecup
4 steps adjustment eyecup meets different needs and also helps prevent stray light.
04.
1/4”-20 Threaded Hole
You can purchase SIRUI BA-2 Binoculars Adapter to help mount the binoculars on tripod.
05.
Included Strap
Prevent the product from being lost or falling off.
06.
Good Match
Put the eyepiece cap on objective lens cap for storage.
Two Colors
*Optional SIRUI SP124+B5X+BA-2 Tripod Kit
*Optional SIRUI SPD04+G5X+BA-2 Tripod Kit
Multiple Scenarios
Super compact, suitable for outdoor viewing.
Concert
Landscape
Bird Watching
Wildlife
Patrol
Astronomical Observation
Match
What’s in the Box
1. Box
2. Warranty Card
3. Lens Cloth
4. Binoculars
5. Carrying Bag
6. Strap
7. Eyepiece Cap
8. Objective Lens Cap
Specifications
Name
Beyond Series 10X42 ED Binoculars
Interpupillary Adjustment
55~75mm / 2.17~2.95inch
Magnification
10X
Minimum Focus Distance
3m
Eyepiece Diameter (mm/inch)
φ 20 / φ 0.79
Maximum Focus Distance
∞
Objective Lens Diameter (mm/inch)
φ 42 / φ 1.65
Diopter Adjustment
-6~+6D
Exit Pupil Diameter (mm/inch)
φ 4.2 / φ 0.17
Weight (g/lb)
525 / 1.16
Exit Pupil Distance (mm)
16.4 (Center) / 15.8 (Edge)
Dimensions (mm/inch)
130*120 / 5.12*4.72
FOV
6.0° / 104.8m@1000m / 314.4ft@1000 yd
Waterproofing
IPX7
Light Transmission
88.5%
Operation Temperature
-15~60℃
Distortion
3.9%
Storage Temperature
-20~60℃
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.
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
4.7 ★★★★★
Based on 15 reviews
Sort
Product Reviews
★★★★★ 5
Beutiful and rugget watch.
Color: Black, Size: One Size
Beutiful aspect, great and rugget watch, looks great on the wrist, nice and clear backlight, very ligth watch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Worked Amazingly!
Needed it for an Army course and would have been lost without it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
★★★★★ 5
Companion to the best map markers ever!
These are a must for minor corrections when using their pens!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2025
★★★★★ 5
Didn’t know what to expect and was pleasantly surprised
Purchased to go along with the staedtler color markers. Mostly writing on laminate and loksaks. Works well and allows you to easily wipe off any permanent marker. Curious as to how long it’ll last. Keep a small cloth to wipe nib clean after use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2025
★★★★★ 1
Waste of money
What a waste of money this was. After receiving this I was excited to try it out, my excitement soon turned to disappointment. No matter what I did, the only thing that I could get to come out was clear liquid. It immediately went into the trash.
Save your money and just go buy the BIC correction pen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
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