SVBONY SV202 High 8x 32mm IPX7 ED Glasses FMC Full with Diopter for Bird and Nature Observation Binoculars, Magnification, Magnification, Aperture,

Ultra-low dispersion ED glass. Significantly reduces the degree of dispersion of light, allowing refracted light to be more concentrated on the focal plane. Most useful when observing the details of a target. High-quality magnesium alloy body. Made of high-quality magnesium alloy with low density and high strength, it has excellent heat dissipation and shock absorption, enhancing the performance of the binoculars body so you don't have to worry about dropping them. Ultra-high quality optical design. Phase-corrected coated BaK4 prisms maximize ultra-high light transmittance to restore colors for the most realistic images. The IPX7 ultra-high waterproof SV202 binoculars offer an incredible field of view of 409 feet/1000 yards, allowing you to see the details of targets at a distance. Metal focus wheel with ±3D diopter adjustment. The metal central focus wheel ensures smooth focusing. The twist-up eyecups and ±3D diopter adjustment design make it comfortable for eyeglass wearers.