Fujinon 7×50 WP-XL Mariner Binoculars

Fujinon 7×50 WP-XL Mariner Binoculars
Overview
The WP-XL Mariner series is engineered to provide a stable, bright image even on a rocking boat. The 7x magnification is the preferred standard for marine use because it minimizes image shake from hand tremors or vessel movement, while the large 50mm objective lenses gather significant light for use at dawn, dusk, or in heavy fog.

Key Features and Specifications
Optical Design: Porro Prism design (BAK4) for superior depth perception and a bright 3D image.

Magnification: 7x.

Objective Lens: 50mm, providing a large 7.1mm exit pupil that ensures a bright image even in low-light conditions.

Field of View: 7.5° (Actual), which translates to approximately 131 meters at 1000 meters. This wide field is essential for scanning the horizon for buoys or other vessels.

Individual Eyepiece Focus (IF): Each eyepiece is focused independently. Once set to your vision, the binoculars provide a deep “depth of field,” meaning objects from roughly 50 feet to infinity will remain in focus without further adjustment.

Eye Relief: A generous 18mm, making them highly comfortable for users wearing sunglasses or prescription eyeglasses.

Construction:

Polycarbonate Body: The housing is made of high-strength polycarbonate, making them significantly lighter than traditional all-metal marine binoculars (weighing approx. 885g / 31 oz).

Waterproof & Fogproof: Nitrogen-purged and O-ring sealed to prevent internal fogging and resist salt-spray damage.

Rubber Armored: Features a non-slip rubber coating for a secure grip in wet conditions and impact protection.

Floating Feature: These binoculars are designed to float in water when used with the included bright yellow flotation neck strap, ensuring they aren’t lost if dropped overboard.

Variants: WP-XL vs. WPC-XL
There are two primary models in this series:

WP-XL (Standard): The base model described above.

WPC-XL (Compass): Includes a built-in, LED-illuminated precision compass and a range-finding reticle for navigation and distance estimation.

Summary
The Fujinon 7×50 WP-XL is a reliable “essential” for any mariner. Its combination of light weight, excellent light transmission, and the security of a floating design makes it a practical choice for both professional sailors and recreational boaters who need dependable optics in harsh environments.