The professional 50mm wide-angle lens, the large eyepiece allows you to see at a glance while having the greatest pleasure of being close to the world. You can use binoculars in low light conditions, but not in completely dark environments. 【HD vision】 The powerful adult binoculars feature large, high quality BAK-4 prisms. Full multilayer green wideband film Through aspherical lens with multilayer film. It is a key component for clear vision and clear images. Ensure good light transmission and good brightness for a clearer view. Even in the evening you will still have a good experience designed for outdoor activities. 【Concentrate easily】 The compact binoculars a high quality adjustable phone holder that is compatible with all brands of smartphones . Adjustable width night vision binoculars for adults and children. By adjusting the center focus wheel and parallax compensation wheel, you can easily focus on the observed object. Suitable for outdoor observation, sporting events, concerts. 【Portable and convenient】 Adult astronomical telescopes can be taken with you. You can hang it around your neck when you are busy. The sealed design is waterproof and anti-fog. The rubber grip is non-slip and very durable, light water resistant, but can not be submerged in water for a long time. Product Equipped with the latest binocular technology. The high performance 20x50 professional binoculars with oversized prism and high quality lens provide a wide and very clear field of view, excellent visual effects and easy discovery of the beauty of nature. Easy to wear The child binoculars are equipped with a portable shoulder strap and a bag. You can hang it around your neck when you are busy. Suitable for hiking, wildlife viewing and landscape viewing. Waterproof, anti-fog lens, special heavy-duty non-slip rubber grip. It can withstand light water but cannot be used for long periods under heavy rain or soaked in water. Steps for use 1. Determine the appropriate distance for the exit pupil and set the distance between the eye and the eyepiece, usually 10-20mm. 2. Adjust the center distance of the left and right eyepieces until the left and right fields of view coincide. 3. Adjust the focus dial so that the left eye is viewing clearly. 4. Adjust the parallax compensation dial so that the overlapping left and right fields of view are the clearest. Product list: 1 * binoculars 1 * portable backpack 1 * eyepiece and lens cap 1 * cleaning cloth 1 * straps 1 * smartphone adapter 1 * User Manual Note: Due to manual measurement, please allow 0-3cm difference. Thanks for understanding. The monitor calibration method is different. The color of the product shown in the photo may be slightly different from the actual product. Please refer to our size before ordering. Number of shots: 1 set