Shoreline 8 x 42 Waterproof Binoculars
Mouse Over to Zoom
Click to Enlarge

WEST MARINEShoreline 8 x 42 Waterproof Binoculars


Limited availability.
Model # 16730525 | Mfg # KO0842WMUPC # 25282179916


Shoreline 8 x 42 Waterproof Binoculars

Name Value
Binocular Eye Relief 18 Millimeters
Features Waterproof
Focus Type Center
Magnification 8 x 42
Prism Type BaK-4 Roof
Warranty Details Three Years
Weight 20 Ounces

Product Overview

These binoculars are ready to improve your world view and you can only get them from West Marine!

Whether you're trying to spot the legendary Ivory-billed Woodpecker (last reported sighting in 2004) or just want to see which of your offspring is in the lead as they race across the lake on their SUPs, our Shoreline 8 x 42 Waterproof Binoculars have all the features you need. With their compact size and weighing in at a mere 20 ounces, they're easy to stash in your jacket pocket, backpack, tackle box, carry-on luggage, hydration pack, golf bag, handbag, beach tote, waterproof hatch in your get the idea! And since they're waterproof you don't have to worry about getting caught in a sudden downpour or having your four-legged companion slobber on them.


Just what does the 8 x 42 mean with these binoculars? The 8 identifies the power of the lens. Objects will appear eight times closer than they do with the naked eye. The 42 stands for the diameter of the objective lenses (the ones furthest from your eyes) in millimeters. The larger the objective lens, the more light can enter the binoculars. The more light they can gather, the brighter objects will appear—particularly important in low light conditions like cloudy days or when fog or rain are part of the equation.

Field of View

This specification is expressed with 1,000 yards as a standard for reference. These Shoreline binoculars have a field of view of 357 feet at 1,000 yards. That means you can see a 357-foot wide object at a distance of 1,000 yards.

Center Focus

Are these binoculars hard to focus? Not at all. A diopter (that ridged collar on the right side eyepiece) adjusts for the difference between your eyes (if there is any). Once you set that, simply turning the center focus knob will adjust the focus for both eyes simultaneously. This set-up makes it easy to view something quickly since you only have to turn the center focus knob when you point your binoculars at objects of varying distances.


This pair of binoculars has BaK-4 prisms that use a dense, fine barium crown glass which eliminates internal light scattering and produces sharper images. Without prisms, objects would appear upside down due to the refraction properties of convex lenses.

Multi-Coated Lenses

These binoculars feature multiple layers of optical lens coating to give you high light transmission (the amount of light that reaches your eyes), plus high image sharpness and high color fidelity.


A little rain or getting splashed by an exhuberant swimmer is no problem for these binoculars. They are built to the IPX7 Waterproof Standard. That means they will survive immersion in water for 30 minutes at a depth of 1 meter. However, exceeding that time isn't recommended. So storing them somewhere cool and dry is a good idea. They're also nitrogen-filled so they won't fog up as the temperature changes.

Eye Relief

The twist-up eyecups provide up to 18mm of eye relief so you can adjust them to fit the shape of your face. If you wear eyeglasses just keep them retracted since you have already created the necessary distance between the ocular lenses and your eyes which allows you to see the full field of view. You can even put your eyeglasses directly against the eyecups since their soft rubber prevents scratching.

Rubber Armor

Your binoculars are covered with rhino tough rubber armor. Not only does this protect them from shock and damage, it's also soft and comfortable in your hands.

In the box

  • Padded carrying case with shoulder strap
  • Carrying strap
  • Owner's manual
  • Lens cleaning cloth


  • Magnification: 8x
  • Objective Diameter: 42mm
  • Eye Relief: 18mm
  • Waterproof: IPX7 standard
  • Focus: Center
  • Relative Brightness: 27.6
  • Light Transmission: >80%
  • Field of View: 357' @ 1,000yds.
  • Minimum Close Focus: 4'11"
  • Prism: BaK-4 Roof
  • Weight: 20oz.
  • Dimensions: 5"W x 5"H x 2 1/4"D
  • Warranty: Limited lifetime


 WARNING: Cancer and Reproductive Harm -


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A