The Nikon Aculon A211 10-22×50 Binoculars offer a variable zoom that allows you to view objects even 1000 m away. These binoculars have BAK4 porro prisms with aspheric eco-glass elements that are free of lead and arsenic. The binoculars offer a magnification of 10-22× and an apparent viewing angle of 37°. Their 50mm objective lenses are multi-coated to improve contrast and clarity. With the fingertip-accessible zoom lever, you can easily adjust the magnification. The binoculars also have a center focus wheel and fold-down rubber eyecups. The sculpted rubber housing offers amazing grip. A tripod-mounting adapter comes along with these binoculars.