Waterproof 12x25 Porro Prism Binoculars for Hiking
Clear, steady views when the weather turns. The BK4 is a 12x25 porro prism binocular with a water-repellent body, a diamond-grip rubber shell and green-coated lenses. It is built for trails, boats, and dusk walks.
Read the full descriptionDescription
Clear, steady views when the weather turns. The BK4 is a 12x25 porro prism binocular with a water-repellent body, a diamond-grip rubber shell and green-coated lenses. It is built for trails, boats, and dusk walks.
Waterproof 12x25 HD binoculars with night vision for clear viewing in any weather
- poor visibility in low light
- gear failing in rain or spray
- slippery grip in wet conditions
Sharp views when the weather turns against you
Before: rain fogs your view, wet hands lose your grip, and dusk hides the wildlife. After: a waterproof 12x25 binocular with green-coated lenses keeps the trail, shoreline, and birds in focus.
Rugged enough for rain, spray, and slick hands
- Waterproof body, rain-ready
The body is sealed-looking and repels water, so a drizzle or a wave splash does not stop you from scanning. Keep it in a pack until you need it, then raise it without a second thought.
- Diamond grip that holds
The diamond-pattern rubber grip stays secure with wet or gloved hands. The texture catches your palm, so the binocular does not rotate in your grip on a rocking deck or a muddy switchback.
- Green-coated optics
The green-coated objective lenses give a brighter, cleaner image as the light drops. Colors hold longer at dusk, and the lens glow is easy to spot in the inset comparison.
12x magnification with a 25mm objective
- 12xMagnification power
- 25mmObjective lens diameter
- 83mField of view at 1000m
Set it up in under a minute
- 1Set the eyecups
Fold the eyecups up for glasses or down for bare eyes. Adjust them once so the full field stays visible without black edges.
- 2Dial in the focus
Turn the central wheel until a distant tree or building looks crisp. Keep the setting for the same user and it stays consistent.
- 3Check the grip
Hold the diamond-pattern rubber shell with both hands. Raise it slowly to confirm the texture sits well in your palm before you head out.
Rinse, dry, and store it right
- Rinse after salt or rain
Use fresh water to clear grit and salt from the body and lenses.
- Dry with the supplied cloth
Pat the lenses dry. Do not rub them with a dry shirt, since grit scratches the coating.
- Store dry, away from heat
Air dry the body after wet use before closing it in a bag or case.
Characteristics
Reviews
Questions and answers
The 25mm objective gathers enough light to brighten dawn, dusk, and moderately lit scenes. It will not show detail in pitch darkness. For full night work, pair it with a headlamp or a dedicated night scope.
The body is water-repellent and built to handle rain, drizzle, and spray. Rinse off salt and grit with fresh water, dry it, and store it somewhere dry. Do not submerge it.
Yes. The diamond-pattern grip stays firm with wet hands, and the body sheds spray during normal boating. Keep salt water off the lenses and rinse after each trip.
The rubber shell and compact porro body suit regular trail and boat use. Premium brands cost several times more, but a binocular you keep in the pack and use in weather delivers more sightings per dollar than a pricier one left at home.
The coating cuts glare and reflections on the lens surface, so more light reaches your eye. Colors look cleaner at dusk, and shapes on the shoreline stay easier to separate.

