Portable 8X21 High-definition Children's Telescope Mini Outdoor Colorful Binoculars Concert Features: AK4 green coating and full multilayer coating lens provide you with and real backyard bird watching images. All glass surfaces have multiple coatings, so the luminous transmittance is very high. Based on this, these binoculars also provide low night vision. It can be used at night, but not in total darkness. Ideal for concerts, operas, sightseeing and astronomy. 8X magnification, 21mm lens, providing high definition, no discoloration or blurred. The telescope has a field of view of 306 feet at 1000 yards, providing an excellent close-up view for bird watchers, sports enthusiasts, racing fans and other camping trips. The nearest distance observed by the telescope is , and less than will in unclear observation. Suitable for children and adults aged 8-12 years. Easy to hold, suitable for the palm, enough to attract children to nature. It is suitable for anyone who wants a pair of but powerful binoculars, so that they can enjoy parent-child. It is also an ideal Christmas, Father's Day and boys and girls. The binoculars have a wide and focus knob, which can be easily focused to adapt to adults and children. Use the center adjustment wheel to easily focus on the. When used for the first, the refractive system can adjust the visual imbalance of both eyes, and you can see a more. If the strength of both eyes is the same, please adjust the diopter knob to 0. Otherwise, the you see is not clear. The rubber is ergonomically designed, with stable grip, focusing, shockproof and anti-skid functions, and and design. Rugged construction rubber eyewear provides comfort for the wearer of glasses, as do diopter adjustment rings and shoulder belt . Product details: size：8*11.2*6CM / 3.1*4.4*2.4inch Parameters: 10 * 22 Lens material: bak4 Coating: multilayer coating Eyepiece diameter: 12mm lens diameter: 22mm Pupil distance: 10mm pupil diameter: 458mm Field of view angle: 5.6 ° Field of view: 114m/1000m Package Contents: A telescope*1 Storage bag*1 Lifting rope*1 Wiping cloth*1 Notes: Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thanks! Due to manual measurement, please allow slight measurement deviation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.