Dynamic Focusing System : Compass binoculars have high-end configurations such as FMC + BAK4 + IPX7. They form a high-quality dynamic focusing system with a light transmittance of more than 99%, a bright field of vision, and vivid color reproduction. They can effectively reduce glare and ghosting, even in backlight or glare. Under the background, can also clearly capture high-speed moving targets. IPX7 nitrogen-filled waterproof function can significantly extend the service life.Orientation + Measurement : Compared with ordinary binoculars, compass binoculars have added orientation and measurement functions. It can easily help you confirm the position of the observation target relative to you, and when you know the height of an object in the distance, you can also use it to measure the distance from objects to you. Very professional for hiking, mountaineering, and some water sports such as sailing and surfing.Day & Night DesignCompass binoculars have two observation modes: day and night. During daytime observation, you can easily capture the observation target with dynamic focusing system and ultra-wide-angle design. When you are in low light, you can turn on the night mode, the compass display board will light up, and the high-quality optical system can effectively reflect the extremely low brightness light and magnify it significantly, so it can assist you to observe in dim conditions.Optical image stabilization system : With 23mm large eyepiece + 50mm super objective + 10x HD magnification, and the eyepiece is composed of multiple lenses. They can effectively eliminate aberrations and increase the field of view and viewing angle magnification. Interpupillary distance can be adjusted between 56-74mm, suitable for adults and children.