7x50 HD Compass

Key Features ：
● BAK4 Porro Prism Optical
● Individual Sports-Auto-Focusing System
● XLT Fully Multi-Coated Optics
● Fold-Down  Rubber Eyecups
● Nitrogen-Filled, Water and Fogproof
● Traditional Porro Prism
● Makrolon Polycarbonate Chassis
● Observe distant objects and calculate distances
Overview
They feature high definition and index-matched fully multi-coated optical elements produce high-contrast images with edge-to-edge brightness and true color rendition.   For extra protection against dirt, oils, and water,  treated the objectives and oculars with a hydrophobic coating that resists scratches and makes cleaning the lenses easier without residue.   The 7x magnification and 50mm objectives work together to produce an impressive 7.1mm exit pupil that, when combined with the generous field of view and long eye relief, present the user with an immersive observational experience on the land with greatly reduced discomfort that is often felt when glassing on rough or rolling seas.   Their optical tubes are nitrogen-filled and O-ring sealed to be waterproof to a depth of 33 feet, and resistant to internal fogging when moving through extreme temperature changes and environmental conditions.
Optical Performance
● 7x power provides moderate magnification while helping to produce a wide exit pupil for easier low-light use, without sacrificing field of view
● Large 50mm objective lens diameter draws in copious amounts of light to boost its light-gathering ability in challenging conditions such as at dawn and dusk, or in dense fog
● Traditional Porro prism design makes it comfortable to hold, and presents a rich depth of field
● High Definition Optic system uses specially-engineered optical coatings that match the specific properties of the lens glass to maximize light transmission and color rendition across the entire visible spectrum, with improved contrast and clarity
● 53° apparent angle of view approaches wide-angle to minimize the appearance of visible hand-shake and the disorientation often felt when using optics on rough or rolling seas
● 396' field of view at 1000 yards
Use and Handling ：
● Individually-focusing eyepieces enable highly-precise focusing, with memory diopter system to store and indicate personal diopter setting ● Fold-down rubber eyecups for comfortable use with or without eyewear
● Ultra-long 22.0mm eye relief makes long-duration glassing sessions comfortable with reduced eye strain
● Large 7.1mm exit pupil is optimized for low-light conditions to completely cover pupils when they are fully dilated to avoid vignetting of the view ● Weight:  39.33 ounces
Sports Auto-Focusing System:
● Individual eyepiece focusing
● Requires only one initial individual focus adjustment per user
● Eliminates the need for refocusing for targets at ranges from 22 yards (20m) to infinity
● Enables the tracking of fast targets without the need to refocus
Construction Details：
● Lightweight, and corrosion and impact-resistant Makrolon polycarbonate chassis
● Nitrogen-filled and O-ring sealed to 14-psi of pressure, to be waterproof to a depth of 33' (10m), and resistant to internal fogging when moving through extreme temperature changes and environmental conditions
● Oil, petroleum, and chemical-resistant NBR synthetic rubber armor offers improved grip security, especially in cold and wet weather
Specifications Performance