Amazon.comDesigned specifically for the nautical and boating enthusiast, the Barska 7x42 Deep Sea monocular provides clear views of marine surroundings from sunrise to sundown. The 7x42 version of the Deep Sea is the most popular monocular in the series, because it provides a steady image under rough sea conditions. In addition, this model includes an internal rangefinder and directional compass for navigation. Optics-wise, the Deep Sea series offers fully multicoated optics for increased clarity in low-light conditions, along with BaK-4 prisms to guarantee crisp images. The monocular\'s nonslip rubber armor, meanwhile, provides a secure grip even when wet. And, of course, the Deep Sea is O-ring sealed for complete waterproof protection, so you can use it in virtually any weather. Other features include a dry-nitrogen-purged and -sealed housing to prevent fogging and moisture damage, a shockproof design that holds up to rough use, and a carrying case and wrist strap.The 7x42 Deep Sea monocular includes an internal rangefinder and directional compass. Specifications: Magnification: 7x Objective lens: 42mm Waterproof: Yes Fogproof: Yes Reticle: With internal rangefinder and directional compass Prism type: Porro Prism glass: BaK-4 Exit pupil: 6mm Optical coating: Fully multicoated Focusing system: Individual Field of view: 366 feet 100 yards Close focus: 42.64 feet Eye relief: 19mm Weight: 13.4 ounces Warranty: Limited lifetimeAbout BarskaBarska is a worldwide sport optics company with strong brand recognition within the optics industry, with corporate offices in La Verne, California, and warehouses and distribution centers in La Verne and Shanghai, China. Barska offers an extensive line of precision sport optics products, such as binoculars, riflescopes, spotting scopes, and telescopes. The product range has been designed and built with the latest optical technology, allowing users to enjoy all their favorite leisure time outdoor activities, including bird watching,

• Nautical Observation: The monocular is waterproof and designed to specifically for the nautical and boating enthusiast.
• Navigation Tool: The deep sea monocular comes with internal rangefinder and directional compass, providing nautical and boating enthusiasts precious direction.
• Precision Optics: With high quality BAK-4 porro optics, the binoculars brings you exceptional clear views to enjoy from sunrise to sunset.
• Rugged Design: The binoculars is dry nitrogen-pruged and sealed. It is fogproof, waterproof, shockproof, and floats on water.
• Easy Handling: The non-slip and ergonomic rubber design and neck strap make the binoculars easy to carry and use.