Are the Sightron SIII 12x50 ED Binoculars heavy to hold during extended glassing sessions in the outback?

The binoculars weigh 31.2 oz (885 g), which provides a solid feel but can introduce noticeable hand shake during prolonged 12x magnification viewing. For extended glassing sessions across open country, we strongly recommend using a tripod adapter or a stationary chest-rest support to reduce user fatigue and maintain a steady image.

What is the closest distance I can focus on targets with the Sightron SI-25183 binoculars?

The minimum close focus distance for the SI-25183 model is 9.9 feet (3.0 meters). While this is ideal for medium-to-extended distance scanning, it means close-range observation inside 3 meters is beyond the optical capability of these binoculars.

Do these binoculars require any electrical compliance certification or batteries for use in Australia?

No, the Sightron SIII 12x50 ED Binoculars are purely manual, passive optical instruments containing no electronics, rechargeable cells, or active image-stabilisation components. Therefore, mains 240V compatibility, Australian plugs, and SAA or RCM electrical compliance certifications are not applicable to this product.

What items are included in the box when purchasing the Sightron SI-25183 binoculars?

The retail package includes the binoculars, a carry case, a neck strap, objective lens covers, rainguard/eyepiece caps, a lens cleaning cloth, and the instruction manual. Twist-up/down multi-position eyecups are also built-in to accommodate both eyeglass and non-eyeglass wearers.

12x50 ED Binoculars - Sightron SI-25183

The Sightron SIII 12x50 ED Binoculars (MPN: 25183) are roof-prism optical instruments engineered for long-range terrestrial observation and open-country scouting. Featuring extra-low dispersion (ED) glass and fully multi-coated optical elements, they reduce chromatic aberration while delivering high-contrast, edge-to-edge sharpness. Designed to withstand demanding outdoor conditions, the housing is nitrogen gas-charged and 100% waterproof to eliminate internal fogging during rapid temperature transitions.

Key Features

ED Glass Elements: Minimises colour fringing to provide clear target definition across extended viewing distances.
All-Weather Construction: Fully waterproof and nitrogen-purged to maintain fog-free internal optics in damp environments.
Adjustable Eyecups: Multi-position twist-up eyecups paired with 16.0 mm eye relief accommodate users with or without eyeglasses.
Passive Optical Design: Fully manual roof-prism assembly containing no internal electronics, requiring no batteries or electrical charging.

Specifications

Magnification: 12x
Objective Lens Diameter: 50 mm
Prism Type: Roof prism
Lens Coating: Fully multi-coated with Extra-Low Dispersion (ED) glass
Linear Field of View: 263.9 ft at 1,000 yards (~88 m at 1,000 m / 5.0°)
Eye Relief: 16.0 mm
Exit Pupil: ~4.17 mm
Close Focus Distance: 9.9 ft (~3.0 m)
Length: 5.86 inches (~148.8 mm)
Weight: 31.2 oz (~884.5 g)
Included Accessories: Carry case, neck strap, objective lens covers, rainguard eyepiece caps, lens cleaning cloth, instruction manual

Who is the Sightron SIII 12x50 ED Binoculars for?

High-plains and mountain hunters — Glassing across expansive valleys and ridgelines benefits from the 12x magnification and 50 mm objective lenses of this roof-prism hunting binocular, which gather light while resolving distant game across open country.
Long-range wildlife monitors — Extended stationary observation over wide expanses relies on the 263.9 ft at 1,000 yards field of view, allowing observers using this 31.2 oz binocular to detect and monitor animal movements across broad landscapes.

Less suitable for: Close-range tracking inside a 9.9 ft (3.0 m) distance, or rapid target acquisition in dense timber where the 5.0-degree field of view restricts spatial awareness; hunters working thick brush are better served by a wider-angle 8x42 or 10x42 binocular.

SKU	SIT42337LP
Model #	SI-25183
Brand	Sightron
Shipping Weight	1.0000kg

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Sightron Si-25183 Siii Binoculars 12x50 Ed Glass Waterproof

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