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Nikon

Nikon 7237 Action 7x35 EX All-Terrain Binoculars

★★★★★4.3 (7 reviews)

Rugged waterproof 7x35 binoculars with BaK4 prisms and multicoated lenses for all-terrain adventures.

$149.95*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Nikon 7237 Action 7x35 EX binoculars are built for outdoor enthusiasts who need reliable optics in unpredictable conditions. With a fully waterproof, fogproof construction — achieved through O-ring sealing and nitrogen gas filling — these binoculars perform confidently in rain, snow, and humid environments. The rubber-armored exterior absorbs impact and provides a sure grip whether your hands are wet or gloved, making them a practical choice for hiking, birdwatching, boating, and sporting events.

Optically, the 7x35 configuration strikes a balance between magnification and field of view, delivering a wide 9.3-degree real field of view (163m at 1,000m) that makes it easy to locate and follow moving subjects. BaK4 high-index porro prisms paired with multicoated lenses produce bright, high-contrast images with accurate color reproduction. The generous 5.0mm exit pupil ensures good performance in low-light conditions such as dawn and dusk. A smooth central focus knob allows quick adjustments, while the 17.3mm eye relief and twist-out eyecups make extended viewing comfortable for both eyeglass wearers and those without corrective lenses.

Key Features

ALL TERRAIN BINOCULARS: Designed for all levels of outdoor enthusiasm, Nikon Action Extreme Binoculars have a durable and protective rubber-armorded coating to provide a sure, non-slip grip, wet or dry.

WATERPROOF & FOGPROOF: Completely airtight Nitrogen filled binoculars and O-ring sealed ensures an impenetrable binocular body that keeps water out and prevents fog buildup.

ERGONOMIC BODY DESIGN: A slim and comfortable design provides comfort for long, extended viewing sessions, along with built-in long and variable eye relief that can be customized to accommodate glasses + click-stop, twist-out eyecups for increased customization.

SMOOTH CENTRAL FOCUS KNOB: A smooth central focus knob, enables a fast range of focus for the ultimate image in quick viewing. With bright, multicoated lenses and BaK4 high index porro prisms, the images are bright, sharp and high-definition.

BUNDLE INCLUDES: Nikon Action Extreme 7x35 ATB binoculars, Nikon lens pen and lens cloth cleaning kit for essential maintenance, portable carrying case and neck strap, and objective eye piece caps for travel safety.

Specifications

Magnification
7x
Objective Lens Diameter
35mm
Prism Type
Porro (BaK4)
Real Angular Field of View
9.3°
Apparent Angle of View
65.1°
Field of View at 1000m
163m
Exit Pupil
5.0mm
Eye Relief
17.3mm
Relative Brightness
25.0
Close Focus Distance
5m / 16.4 ft
Waterproof
Yes (Nitrogen-filled, O-ring sealed)
Fogproof
Yes
Dimensions
120 x 184mm (4.72 x 7.24 in)
Weight
800g / 1.76 lb

Pros & Cons

👍 Pros

  • Fully waterproof and fogproof nitrogen-filled construction handles harsh weather conditions
  • Rubber-armored body provides a secure non-slip grip in wet or dry conditions
  • Long 17.3mm eye relief comfortably accommodates eyeglass wearers
  • BaK4 porro prisms and multicoated lenses deliver bright, sharp images
  • Lightweight 800g body with ergonomic design supports extended viewing sessions

👎 Cons

  • 5-meter close focus distance is too far for detailed observation of nearby subjects
  • 7x magnification is modest compared to 8x or 10x alternatives in the same price range
  • Porro prism design makes the body wider and bulkier than roof prism binoculars
  • No image stabilization, so hand tremor is noticeable during prolonged glassing

Frequently Asked Questions

They are fully waterproof. The body is O-ring sealed and nitrogen-filled to prevent internal fogging and keep water out, even in heavy rain or if briefly submerged.
Yes. The 17.3mm eye relief and click-stop twist-out eyecups are specifically designed to accommodate eyeglass wearers while still providing the full field of view.
The minimum focus distance is 5 meters (16.4 feet), which is suitable for general wildlife and outdoor observation but not ideal for very close subjects like butterflies at arm's length.
It uses BaK4 high-index porro prisms, which deliver brighter, sharper images with better edge-to-edge clarity compared to BK7 prisms found in lower-cost binoculars.
The bundle includes the binoculars, a Nikon lens pen, a lens cloth cleaning kit, a portable carrying case, a neck strap, and objective and eyepiece caps.

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