Aculon Nikon Binoculars The Nikon Aculon 10x42 A211 Binoculars are designed for outdoor enthusiasts seeking high-quality optics in a lightweight, ergonomic package. With a magnification of 10x and an objective lens diameter of 42mm, these binoculars are perfect for birdwatching, hunting, and sporting events. Moreover, their versatility makes them an excellent choice for various outdoor activities.