Professional HD 20 x 50 binoculars: adult binoculars with 20x magnification, 50 mm large lens, 22 mm large eyepieces, offer a field of view of 168 ft/1000 yd, suitable for fast moving objects, bird watching, and outdoor activities (such as climbing, hiking, driving, hunting, safari), watching sporting events. An ideal gift for family and children.High Definition Vision and Low Light Night VisionThe binoculars use BAK-4 prism, without dark edges, using FMC full layer green film, with 99.9% light transmission, the image is clear, sharp and transparent; binoculars with night vision, you can use it in low light, but not in total darkness. Suitable for concerts, opera, sightseeing and astronomical observations.Dual Focus Capability, Easy to UseOur binoculars 20x50 use the central focusing knob with thread to focus quickly, accurately and comfortably; And the focus ring of the right eyepiece can adjust the dioptre to compensate for the visual difference between the eyes; correcting the optical coating promotes colour fidelity and minimises distortion. The shortest focus Usage distance: 5 m.Non-slip, durable, waterproofDurable structure with odourless rubber armour for strong shock resistance, durable, comfortable to grip and not easy to slip. The waterproof design can meet daily waterproof needs, but cannot be soaked in water for a long time. Binoculars are suitable for outdoor activities such as climbing, hiking, travelling, observing wildlife and landscapes.