The SIG Sauer ZULU6 HDX PRO Marine 18x50 Image Stabilised Binoculars, part number SOZ6WP1850M, are the flagship of the whole SIG SAUER binocular range: 18x magnification on 50mm objectives with OmniScan™ OIS stabilisation, a 3.7-degree actual field of view (approximately 65 m at 1,000 m) and a 66.6-degree apparent field, built for water in high-visibility orange armour with a polarised objective flip-back cover that cuts glare off the sea.
OmniScan™ OIS works from a digital accelerometer, running on two AA alkaline cells for 40 hours and compatible with rechargeable li-ion. The lens system is HDXPRO™ GLASS with LENSARMOR™, LENSHIELD™ and SPECTRACOAT™ coatings through Schmidt-Pechan roof prisms. Twist-up eye cups give 15.3mm of eye relief, close focus is 5.5 m (18.04 ft), and the IPX7 waterproof and fog-proof body measures approximately 203 x 67 x 122 mm (8.00 x 2.63 x 4.79 in) at 963 g (33.97 oz). It ships in a custom Pelican waterproof case with a hi-visibility floating neck strap.
How It Compares
The ZULU6 HDX PRO Marine 18x50 is the flagship of the whole SIG SAUER binocular range and the most heavily equipped. Optically it matches the ZULU6 HDX PRO 18x50 — same 3.7-degree field, 66.6-degree apparent field, 15.3mm eye relief and OmniScan OIS — but it ships in a custom Pelican waterproof case with a hi-visibility floating neck strap, wears orange body armour, and adds a polarised objective flip-back cover that cuts glare off water. The smaller marine models, the Marine 16x42 and Marine 10x30, are lighter and less expensive but do not carry the Pelican case or the polarised cover.
Ideal For
- Serious coastal and estuary observation at the longest ranges the range will reach
- Boat and RIB work where 18x is only readable with stabilisation running
- Seawatching and wildfowling in glare, spray and driving rain
- Anyone who needs the optic to survive being stowed wet on a boat for a season
Key Features
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Image Stabilisation: OmniScan™ OIS (Optical Image Stabilization) with a digital accelerometer
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Marine Build: High-visibility orange body armour, hi-visibility floating neck strap and a polarised objective lens flip-back cover for glare reduction
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Case: Custom Pelican waterproof case
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Glass: HDXPRO™ GLASS, LENSARMOR™, LENSHIELD™, SPECTRACOAT™
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Battery: Two AA alkaline cells for 40 hours; rechargeable li-ion compatible
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Eye Relief: 15.3mm with twist-up eye cups
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Housing: IPX7 waterproof and fog-proof rated
Technical Specifications
| Magnification / Objective |
18x50mm |
| Field of View |
3.7 degrees (approx. 65 m at 1,000 m) |
| Apparent Field of View |
66.6 degrees |
| Eye Relief |
15.3mm |
| Close Focus |
5.5 m (18.04 ft) |
| Image Stabilisation |
OmniScan™ OIS (Optical Image Stabilization) with a digital accelerometer |
| Battery / Runtime |
(2) AA alkaline (rechargeable li-ion compatible) — 40 hours |
| Prism |
Schmidt-Pechan roof prism |
| Glass |
HDXPRO™ GLASS, LENSARMOR™, LENSHIELD™, SPECTRACOAT™ |
| Dimensions |
8.00" L x 2.63" H x 4.79" W (approx. 203 x 67 x 122 mm) |
| Weight |
33.97 oz (approx. 963 g) |
| Housing / Finish |
Orange high-visibility body armour |
| Water Resistance |
IPX7 waterproof and fog-proof rated |
| What's Included |
Custom Pelican waterproof case, hi-visibility floating neck strap |
| SKU / MPN / UPC |
SOZ6WP1850M / SOZ6WP1850M / 798681703128 |
What's Included
- ZULU6 HDX PRO Marine 18x50 image-stabilised binocular
- Custom Pelican waterproof case
- Hi-visibility floating neck strap
- Polarised objective lens flip-back cover
UK Delivery & Support
Imported from the USA, duty paid by us, and dispatched tracked from the UK — nothing to pay on delivery — backed by UK-based support.
Frequently Asked Questions
What does the polarised objective cover do?It flips back over the objective lenses and cuts glare coming off the water, which is the single biggest obstacle to reading detail at sea on a bright day.
Is the optic the same as the land 18x50?Yes — the ZULU6 HDX PRO 18x50 shares the same 3.7-degree field, 66.6-degree apparent field, 15.3mm eye relief, OmniScan OIS and 40-hour runtime. The marine model adds the orange armour, the floating strap, the polarised cover and the Pelican case.
Can I use rechargeable batteries?Yes — it takes two AA alkaline cells and is rechargeable li-ion compatible, with 40 hours of runtime.
Is it waterproof enough for a wet deck?It is IPX7 waterproof and fog-proof rated, and it stows in a custom Pelican waterproof case.
Is there a smaller marine model?Yes — the ZULU6 HDX Marine 16x42 and the compact ZULU6 HDX Marine 10x30.
Where can I see the rest of the range?The full SIG Sauer line-up sits in our binoculars collection.