Mid-priced with top-notch optics, the BX-4 McKinley binocular from Leupold pairs extra-low dispersion (HD) glass with rare earth element-coated ocular lenses to deliver exquisite colors and razor-sharp details in a clear, edge-to-edge view. The strong, lightweight magnesium alloy body, comfortable rubber armoring, and smooth, fast-focus central knob complete the package and add to your ease of use. The BX-4 McKinley is well protected with waterproofing, fogproofing, and the Leupold Lifetime warranty.
|Extra-low Dispersion (HD) Glass
||Enhances resolution, color, and contrast.
|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.
||Appreciated for a streamlined shape and durability.
|Magnesium Alloy Body
||Is sturdy and resistant to corrosion.
||Provides a secure, non-slip grip.
||Twist up and down for comfortable viewing with or without eyeglasses.
|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.
||Can be mounted using standard ¼-inch threading. Adapter sold separately.
||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.