SVBONY SV27 7x 50mm High FMC IPX7 Adjustable for Nature Observation Binoculars, Magnification, Lens, Magnification, Waterproof, Rangefinder, Compass,

SV27 Binoculars, Military Grade, BAK4 Pure Optical Lens System, Green Film FMC Enhanced Transmittance Coated Objective Lens, FMC Blue Coated Eyepiece Lens. These significantly reduce reflections after light rays enter the objective lens, effectively enhancing light transmission and greatly increasing image brightness and sharpness. Dual-lens focus adjustment system - Military-grade dual-lens focus adjustment for both left and right eyes, perfectly accommodating different vision requirements for each eye. The quick-folding lens design makes it comfortable to use even while wearing glasses. This navigational compass telescope incorporates a distance measuring scale and a directional compass. By reading the data from the scale, it directly calculates the distance to an object using the scale on the left objective lens. It also has a built-in luminous directional compass for estimating bearing. It is applicable to geodetic navigation, maritime patrol, and other applications. With its green rubber surface and textured appearance, you can easily and firmly grip the telescope with both hands, making it comfortable and allowing you to quickly enjoy viewing distant scenery. The design prevents water from entering the lens barrel even when wet from rain or snow. Nitrogen gas is filled inside to prevent lens fogging. 1. The prism uses high refractive index glass BAK4, improving light transmission and reflectivity, resulting in an extremely clear field of view. 2. Dual-lens focus adjustment system - military-grade left and right dual-lens focus adjustment, perfectly accommodating the different vision requirements of the left and right eyes. The quick-folding lens design makes it easy to use even while wearing glasses. 3. Navigation compass telescope - built-in distance measuring scale and directional compass. By reading the data on the scale, you can directly calculate the distance to an object using the scale on the left objective lens. 4. Built-in illuminated directional compass allows for direction estimation. 5. Green rubber surface with textured exterior allows for easy and secure gripping of the telescope with both hands, making it comfortable and allowing you to quickly appreciate distant scenery. 6. The interior is filled with nitrogen gas to prevent lens fogging. 7. A tripod can be attached, so you don't need to hold it by hand, allowing you to observe details that are difficult to see when handheld.