BRIGENIUS 10x42 Roof Prism Binoculars with Clear Weak Light Vision HD Professional Compact Binoculars for Bird Watching Hunting Travel Outdoor Sports Games and Concerts with BAK4 Prism FMC Lens

The BRIGENIUS compact lightweight roof prism binoculars, equipped with fully multi-coated lens and clear prism, 10X power and solid construction, perfect for bird watching, hunting, driving, outdoor sports games and concerts. Special Features: 1, 10X high power and FMC eyepiece 2, Advanced Multi-coated FMC Coatings 3, Clear Weak Light Vision 4, Durable, Solid and Anti-slip Grip 5, HD Vison with Quality Optics & Waterproof 6, Compact,lightweight,very convenient and easy to carry Specifications: Magnification: 10x Objective lens diameter: 42mm Focus System: Center and right eye Close Focus: 2m type of prism : BAK4 Lens coating: Fully multi-coated Waterproof: Yes Field of view: 305ft/1000 yds Field Angle: 5.8 Degrees EASY TO FOCUS 1. Close your right eye and sight an object with your left eye, rotating the center focus wheel until the image is sharp and clear. 2. Open your right eye and close your left eye. Rotating the right eyepiece until the object sighted is sharp and clear. 3. Both sides(eyes) are now in focus and you will need to use only the center focus wheel to focus on the other objects. Package Includes: 1 x 10x42 binoculars 1 x portable bag 1x dust cover 1 x cleaning cloth 1 x antislip strap 1 x user instruction