About this item

 10x50 Binoculars:Binoculars floating with 10x magnification and 50mm large objective lens.22 mm eye relief, 6.8mm exit pupil, and field of view is 396 feet at 1000 yards / 132 meters at 1000 meters.With ±5 diopter left and right diopter ring, You can adjust the distance for better viewing without glasses and for fine focusing. The eyecups can be folded easily so you can operate it with glasses.

 BAK4 Binoculars: High refractive index BAK4 Porro Prism eliminates the stray light and improves color reproduction to 99.99%. Green FMC anti-reflective coating reduces the reflected light in the objective lens and improves light transmission, image brightness and image sharpness.

 Waterproof Fogproof Binoculars: This binocular come with Nitrogen-filled waterproof, fogproof and Anti-shake design. O-ring sealed for complete waterproof protection and float on water so no worries if dropped into the water; Dry nitrogen-purged and sealed to prevent fogging and moisture damage in all weather conditions. Non-slip rubber armor absorbs shock, comfortable to hold and use and highly durable.

 Built-in illuminated compass for direction location, perfect for low light conditions, and a rangefinder for calculate the distance and size of the object on the left eyepiece directly. Perfect marine binoculars include batteries, a ruler and a compass illuminated by the light button, provides the maximum brightness of the image even in low light conditions(not totally dark), such as at dusk and dawn

 Binoculars with Bag and Strap:It is easy to carry and store. Durable rubber armored coating is comfortable to hold and rugged enough to stand up to any conditions. Ideal For Travel, Concerts Outdoor Activities, Bird Watching, Climbing, Hunting, Archery, Hiking, Camping, , Boating, Target Shooting, Water Sports. It is a perfect Birthday Christmas Halloween Thanksgiving Day Gifts.

Especially designed binoculars for marine,birding watching,hunting, sports,wild travel and more. It is a Perfect Gifts for Birthday Christmas Halloween Thanksgiving Day.

Rangefinder Reticle, Directional Compass and Low Light Night Vision

In a dark environment, the scale and the compass are illuminated by the light button.

Calculation method of distance:

For example: Given that the height of the lighthouse is 19 meters and the angle is 65, the distance between the observer and the lighthouse is 19/65=0.292km (292m).

Through our ruler, there is no need to calculate. Turning the dial can directly get a distance of about 290 meters.