The Pentax 7x50 Marine binocular combines the perfect magnification and objective lens size for use by boaters. The easy-to-read, built-in compass comes with a LED illuminator for readability even at night. An external lens coating sheds water and dust for clear views. Another benefit is the ranging reticle feature. It measures an object's size or the distance to it, on water or land. The Pentax Worry-Free warranty keeps this binocular sailing with you for numerous outings.
Fully Multi-coated Lenses
Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
Enhances resolution and contrast through roof prisms.
Optimize light transmission.
Appreciated for a streamlined shape and durability.
Provides a secure, non-slip grip.
Center Focus Wheel
Adjusts both binocular barrels at the same time.
Right Eye Diopter
Adjusts for differences in a user's eyes. Located by the right eyepiece.
Optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the binocular.
Barrels are filled with nitrogen gas to inhibit internal fogging.
I was drawn by the low cost - $150+. But I have been equally impressed by the quality: sharp optics, superior workmanship, and equipped with superior range and sizing reticles. But don't expect these to be light-weight.