Telescopio per birdwatching SVBONY SV47, potente binocolo 8x32/8x42/10x42, professionale, impermeabile IPX7, ideale per il campeggio.

Features: 1.IPX7 waterproof with filling nitrogen. ​2.Pure optical fully multi-coated lens and BAK4 Prism ​3.Wide angle large field of vision.The eye relief can reach 20.4mm and kilometer field of view up to 110m ​4.Multiple gears and twist-up eyecups is suitable for people with different visions.myopic users do not need to remove glasses to enjoy easy observations. ​5.Full texture of all metal focusing wheel with better interlocking and diamond pattern design. ​6.The skin made of rubber not only can protect the product effectively, but also hold the handle comfortably at the same time ​7.Deeper eyecups design with 9.5 mm reduces the probability of dark shadow in the field of vision ​8.We can use it to watch birds, watch the moon, watch the scenery, watch sports events, watch concerts, watch animals, etc. It will be our Good Helper , I believe you will not regret having it. Specification: Model:10X42/8X42/8X32 ​Eyepiece Diameter:19.5mm/21mm/21mm ​Type of Prism:Roof Bak4 ​Prism Coating:Aluminizing ​Lens:FMC ​Focus System:Cent. ​Focusing Lens:Int. ​Angle:5.8°/6.3°/7.38° ​Ft/1,000Yds:304ft/330ft/387ft ​M/1,000M:101m/110m/130m ​M / Ft.:4.5m/14.8ft;4.5m/14.8ft;3m/10ft ​Resolution:5.6"/5.6"/6.8" ​Eyecups:Twist-up ​Exit Pupil:4.2mm/5.18mm/4mm ​Eye Relief:16.9mm/20.4mm/16.8mm ​Diopter System:Right Ocular ​Diopter COMP.:±3D ​Interpupillary Dist.:55~75mm ​Tripod Adapter Interface:Yes ​Water Proof:IPX7 ​Nitrogen Filled:Yes BAK4 has a high refractive index and lower critical angle than other materials, which means it transmits light better with less light being lost due to internal reflection such as from internal bubbles trapped during the manufacturing process. Injecting nitrogen into the telescope's sealed barrel can effectively prevent moisture from entering, waterproof and anti-fog, and can be used normally even in very harsh environments, greatly improving the service life. Fully Multi-coated Glass means multiple coatings on all lens surfaces. And all air-to-glass surfaces are anti-reflective multi-layer coated. And fully multi-coated objective lens increases the light transmission, delivers bright, clears and crisps images even in low-light conditions. The optical structure uses a 3-piece objective lens, a focusing lens, a set of high-precision roof prisms, and a 4-piece 3-group eyepiece. Usually, the objective lens of binoculars is two-piece, and this three-piece type can reduce the aberration and improve the image quality better. Wide angle large field of vision, comfortable and long eye relief, humanized observation experience. Multiple gears and twist-up eyecups are suitable for people with different visions, and myopic users do not need to remove glasses to enjoy easy observations. So whether you wear glasses or not, you can find the comfortable observation position by adjusting the eyecups. Deeper eyecups design with 9.5 mm reduces the probability of dark shadow in the field of vision. The skin is made of rubber and that not only protects the product effectively, but also holds the handle comfortably at the same time. Eyepiece cover design： One end closed and one end open and closed. After removing the eyepiece cover there is still one end hanging on the neck strap, convenient for viewing and not easy to lose.