20-180x100 binoculars, multi-layer coated lens, BAK lens, solid structure, golden magnification, super wide-angle, IPX7 waterproof. High-strength frame, high-quality rubber mirror body, anti-drop, anti-compression. Awesome life-grade waterproof, to give users a better experience. We have not only upgraded the materials and workmanship, but also carefully dealt with the practical details in life. The details of the joints are tightly bonded, which can prevent most of the accidental water ingress in life and improve the practical life of the product. Optical lens materials, beautiful and stylish design, multi-layer broadband coating technology. product information Size: 23*10*29CM Optical coating: FMC Focusing method: central + right eye adjustment Eyepiece diameter: 22MM Weight: 1.75KG Mirror body material: alloy Field of view: 78/1000M Objective lens diameter: 70MM Lens material: BAK4 Field of view: 7° Magnification: 20-180 Eye Cup Type: Rubber