Nikon A211 8 x 42 Binoculars The Aculon A211 8x42 binoculars feature 8-power multicoated lenses and 42mm objectives fabricated with Nikon's exclusive lead and arsenic free Eco-Glass. The BaK4 Porro prism systems within all Aculon A211 binoculars deliver a high quality image under a multitude of lighting conditions, making these binoculars effective from dawn till dusk. All together the Aculon A211 8x42 binoculars are a compact, high-quality, and cost effective choice.