Lightweight and durable the Midas G2 UHD binoculars feature a magnesium chassis ED glass fully multi-coated optics and BaK-4 prisms with ESP Dielectric and phase coatings for sharp bright images. Waterproof shockproof and argon-purged for all-weather reliability they also include scratch-resistant XPL lens coatings and upgraded twist-up eyecups for comfort and durability in the field.