10x50 ED Bird Watching Binoculars

Product highlights

10x50 mm

Mag. & Obj.

ED Glass

Optical Glass

BaK-4 | FMC

Prism & Coating

IPX7 (Nitrogen)

Waterproof

288 ft / 1000 yds

Field of View

17.9 mm (Glasses-Friendly)

Eye Relief

Vendor:ORINVERA

10x50 ED Bird Watching Binoculars

$279.99

Razor-sharp feather detail with zero color fringing, from canopy to brush.

Color
Color: Dark Green

Product highlights

10x50 mm

Mag. & Obj.

ED Glass

Optical Glass

BaK-4 | FMC

Prism & Coating

IPX7 (Nitrogen)

Waterproof

288 ft / 1000 yds

Field of View

17.9 mm (Glasses-Friendly)

Eye Relief
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1-year limited warranty

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Product details

Optical specifications
  • Model: MY-ZT0057
  • Magnification: 10x
  • Objective Lens Diameter: 50 mm
  • Prism Type & Glass: Roof Prism, BaK-4
  • Lens Coating: Fully Multi-Coated (FMC Purple Coating)
  • Field of View (FOV): 5.7° (288 ft / 1000 yds | 96 m / 1000 m)
  • Exit Pupil Diameter: 5.0 mm
  • Eye Relief: 17.9 mm
  • Close Focus: 4 m (13.1 ft)
  • Optical System: ED (Extra-low Dispersion) Glass, 6 elements in 4 groups
  • Waterproof Rating: IPX7 (Nitrogen-purged, fog-proof)
  • Focus System: Center Focus Wheel
  • Diopter Adjustment: Right Eyepiece Diopter Ring
  • Eyecup Type: Twist-up Eyecups
  • Body Material: Aluminum alloy chassis with protective rubber armor
  • Dimensions: 185 × 135 × 65 mm (7.28 × 5.31 × 2.56 in)
  • Net Weight: 940 g (33.1 oz / 2.07 lbs)
Build & durability

Chassis Material: Rugged aviation-grade aluminum alloy framework for maximum structural rigidity and shock resistance.

External Armor: Heavy-duty, ergonomic non-slip rubber armor providing a secure grip in cold or wet conditions.

Waterproof Rating: IPX7 certified (submersible up to 1 meter for 30 minutes).

Weather Resistance: Nitrogen-purged and O-ring sealed for 100% fog-proof performance across drastic temperature shifts.

Eyecup Design: Multi-position twist-up eyecups with soft rubber shielding for comfortable viewing with or without spectacles.

Weight & Dimensions:

Dimensions: 185 × 135 × 65 mm (7.28 × 5.31 × 2.56 in)

Net Weight: 940 g (33.1 oz / 2.07 lbs)

How to adjust focus?

Step 1: Adjust Interpupillary Distance (IPD)

Hold the binoculars with both hands and bend the central hinge until you see a single, circular field of view through both eyes.

Step 2: Center Focus (Left Eye)

Close your right eye (or cover the right objective lens). Look at a distant object through the left eyepiece and rotate the Center Focus Wheel until the image appears sharp and clear.

Step 3: Diopter Calibration (Right Eye)

Now close your left eye. Look at the exact same target through the right eyepiece and rotate the Right Eyepiece Diopter Ring until the target snaps into perfect focus.

Step 4: Unified Viewing

Both barrels are now matched to your individual eyesight balance. From now on, simply use the smooth central focus wheel to focus at any distance.

What's in the box?
  1. 1× 10×50 ED Binoculars
  2. 1× Universal Smartphone Adapter (for mobile digiscoping & photography)
  3. 1× Deluxe Padded Neck / Shoulder Strap
  4. 2× Tethered Objective Lens Caps
  5. 1× One-Piece Eyepiece Rain Guard
  6. 1× Microfiber Optical Cleaning Cloth
  7. 1× Quick Start & Instruction Manual
  8. 1× Premium Protective Storage Box

FAQs

Need help choosing the right binoculars? Send us your use case and we’ll reply within 2 business days.

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Can I use these binoculars comfortably while wearing eyeglasses or sunglasses?

Absolutely. With a generous 17.9 mm long eye relief and multi-stop twist-up rubber eyecups, eyeglass wearers can leave the eyecups twisted fully down to enjoy the complete, unvignetted 5.7° wide field of view without touching their glasses against the glass. Non-wearers can twist the eyecups upward to find their ideal positioning and block out ambient glare.

What is the benefit of ED (Extra-Low Dispersion) glass and the 6-element/4-group optical system?

Standard binoculars often suffer from chromatic aberration (color fringing or purple/green halos around branches, bird feathers, or high-contrast edges). Our premium ED glass paired with an advanced 6-element / 4-group configuration virtually eliminates secondary spectrum color dispersion. This ensures razor-sharp edge-to-edge clarity, natural color fidelity, and lifelike contrast—essential for identifying subtle plumage in birding or spotting game against dense terrain.

How does this 10×50 setup perform in low-light conditions compared to 10×42 or 12×50 models?

The 50mm objective aperture paired with 10x magnification produces a generous 5.0 mm exit pupil and an impressive Twilight Factor of 18.23. Combined with BaK-4 roof prisms and proprietary FMC violet multicoating (delivering over 80% light transmission), this model channels significantly more ambient photons to your eyes than typical 10×42 or 8×32 binoculars. It excels in critical dawn, dusk, heavy canopy, and overcast twilight periods when wildlife is most active.

Are these binoculars truly waterproof and ready for rough weather?

Yes. Built to strict IPX7 marine-grade waterproof standards, the chassis is entirely O-ring sealed and dry-nitrogen purged. It can withstand sudden downpours, snowstorms, and accidental immersion in water without internal moisture leakage. Furthermore, nitrogen filling prevents internal optical elements from fogging up during rapid elevation or ambient temperature drops.

What applications are these binoculars best suited for?

The 10×50 ED configuration is a powerhouse all-rounder engineered specifically for:

  • Wildlife Observation & Birdwatching: High contrast, true colors, and rapid subject acquisition across tree lines.
  • Hunting & Scouting: Superior dusk/dawn light gathering and rugged, shockproof durability.
  • Stargazing & Astronomy: Clear separation of star clusters and lunar craters thanks to the wide 50mm light buckets.
  • Marine & Coastal Surveillance: Fog-proof and saltwater-spray resistant IPX7 construction.