This demo Leica Duovid 8-12x42 Black Binocular is suited for observing objects at long distances as well as in dim light conditions. No matter the viewing situations, Leica Duovids offer a bright and clear image. Switching betweens magnifications causes adjustments; however, the diopter value remains unchanged thanks to the automatic diopter compensation function. Leica Duovid 8-12x42 Black Binocular 40400 Demo