10x50 Marine Binocular With Built-In Compass and Battery-Free Reticle — One Tool for Sailors, Charters, and Coastal Hands
10x50 BAK4 Porro optics with fully multi-coated lenses, an illuminated compass that holds within +/-1 degree, and a graduated rangefinder reticle that needs no battery. IPX7 nitrogen-purged housing, 14 mm eye relief, 28 oz. Built for predawn departures, salt corrosion, and the cold mornings when laser rangefinders die.
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How It Works
How It Works
- Set fold-down eyecups for your eyes (14 mm eye relief works with or without glasses) and dial in the individual eyepiece focus until the horizon line is razor-sharp.
- Switch on the compass illumination for predawn or night use; the reticle is etched optically, so it works at -20 F or 95 F without power.
- Hold a known-height reference (mast, lighthouse, day mark) against the graduated scale and apply the multiplier in the included card to read distance in seconds.
What's Included
What's Included
- NaviScope Marine Binocular (10x50, BAK4 Porro, fully multi-coated)
- Adjustable Neck Strap + Storage Lanyard
- Microfiber Cleaning Cloth + Tethered Lens Caps
- Padded Carry Bag with Belt Loop
- Quick-Reference Reticle Multiplier Card
- Illustrated User Manual + 2-Year Limited Warranty Card
Shipping & Returns
Shipping & Returns
We offer free shipping for all orders. Order processing
takes 1-3 business days before shipment. Once your item/s is dispatched,
the estimated delivery time is:
- USA: 2-12 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days
NaviScope
Built for the Land You Stand On and the Water You Cross
BAK4 Porro Prism, FMC Lens System
Barium-crown BAK4 prisms produce a circular exit pupil and high light transmission across the visible spectrum. The Porro design delivers richer color and stronger 3D depth at the same price point. Edge-to-edge sharpness holds across the full 396 ft field of view at 1000 yds — no chromatic aberration in the outer 20 percent of the frame.
Nitrogen-Purged, IPX7 Waterproof
The internal cavity is purged of moist air and back-filled with dry nitrogen, then sealed with marine-grade O-rings. Withstands full immersion in salt or fresh water to 1 m for 30 minutes (IPX7) and eliminates internal fogging across rapid temperature swings. No internal condensation across 14 cabin-to-deck transitions during testing.
Battery-Free Reticle, Compass +/-1 deg
The illuminated compass holds within +/-1 degree on a rolling deck — same tolerance professional mariners rely on. The graduated rangefinder reticle estimates distance to objects of known height (mast, lighthouse, day mark) using the multiplier in the included card. The compass uses one LR44 button cell, replaceable in 10 seconds; the reticle has no power requirement.
Rubber-Armored, 28 oz Hand-Hold
The polycarbonate frame is wrapped in textured rubber armor for non-slip wet grip and impact protection from short drops onto deck or dock. Weighs 28 oz — light enough for hour-long scans without arm fatigue. Fold-down eyecups give 14 mm eye relief for glasses wearers. Designed for the chop, salt, and bumps of real marine use.
What our 17,000+ Customers say
Based On Real and Honest Experiences
Sailed the Florida Gulf for 14 years with a budget pair that fogged every dawn. Switched to NaviScope last spring. Eight months in, zero internal fog — even on 75 percent humidity mornings — and the eyepiece compass means I am not dropping the glass to check my handheld. Bearings within a degree of my real ship's compass.
I run pre-dawn striper trips out of Hatteras. NaviScope's 50 mm objectives pull light I did not know was there — birds working bait jump out of the gray 30 minutes before sunrise. The illuminated compass keeps me oriented when the horizon line is still invisible. It lives in my tackle bag now.
I doubted whether a marine binocular at this price could earn a spot in my kit. Eighteen months of rough-weather sailing and coastal birding later — image clarity holds up against optics costing twice as much, and the IPX7 housing has shrugged off three Pacific Northwest crossings. The compass +/-1 degree claim checked out against my hand-bearing reference.
Frequently Asked Questions
What level of water protection does NaviScope offer?
What level of water protection does NaviScope offer?
NaviScope is rated IPX7 and nitrogen-purged — the marine industry standard. The housing handles full immersion in fresh or salt water to a depth of 1 meter for up to 30 minutes, which covers heavy rain, ocean spray, and accidental drops over the side. Pair with a marine float strap if you want overboard recovery.
Will NaviScope work comfortably with my eyeglasses?
Will NaviScope work comfortably with my eyeglasses?
Yes. The fold-down rubber eyecups deliver 14 mm of eye relief — wide enough to keep your glasses on while preserving the full 396 ft field of view. Twist the eyecups down, hold the glass steady, and you read corner-to-corner with no vignetting. Glasses-friendly out of the box.
How precise is the built-in compass?
How precise is the built-in compass?
The compass holds within +/-1 degree on a rolling deck — same tolerance professional mariners rely on. It works across magnetic latitudes from the Caribbean through Australia and New Zealand. Customers in extreme polar regions should reach support before ordering.
Can I read the compass after dark?
Can I read the compass after dark?
Yes. A dedicated light switch activates the compass illumination so you can read headings clearly in complete darkness. It is built for predawn departures and night passages. The illumination uses one LR44 button cell — about a year of nightly use before swap.
How does the rangefinder reticle work?
How does the rangefinder reticle work?
The reticle is a graduated optical scale etched inside the eyepiece. Hold a reference of known height (mast, lighthouse, day mark) against the scale and apply the multiplier on the included quick-reference card. You get a reliable distance estimate in seconds, with no battery drain and no electronics to fail in cold.
Is replacing the compass battery complicated?
Is replacing the compass battery complicated?
Not at all. Unscrew the small battery compartment cap, swap the LR44 cell, and screw the cap back on. The whole process takes about ten seconds with no tools. Carry one spare cell in the carry bag and you have a year of compass illumination on hand.
What warranty and return policy ship with NaviScope?
What warranty and return policy ship with NaviScope?
Every NaviScope ships with a 2-year limited warranty against manufacturing defects (seal failure, focus mechanism, compass calibration drift). Try the unit for 30 days on the water — if it does not outperform your current pair, return it in original condition for a full refund. We pay return shipping inside the US.
Where does NaviScope ship from, and how fast?
Where does NaviScope ship from, and how fast?
Orders placed before 2 PM ET ship the same business day from our US warehouse. Standard delivery is 3 to 5 business days nationwide. Orders to AK, HI, or APO/FPO addresses take 5 to 9 business days. Tracking number arrives by email the moment the unit leaves the dock.