The Vortex Viper HD 8x42 binoculars have high-density, extra-low dispersion glass, fully multicoated lenses and dielectric-coated roof prisms to gather more light. They're also waterproof and argon-purged to prevent lens fog.
Great optics; Excellent low-light performance; Fully waterproof and fog-proof; Compact; easy to hold; Unusually good close focus
Field of view could be better