Single hand operation. Powerful, ultra compact and ultra lightweight. Multi Coated optics guarantee superior light transmission and brightness. Suitable for travel, vacation, walking, hiking, sports enjoy beautiful nature, view birds, watch sorts, general purpose. Objective Lens: The diameter of the objective or front lens The larger the objective lens, the more light that enters the binocular, and the brighter the image Note: Day night vision. It will help you see things in low light,it doesnt help you see things in the dark. (Cant be used at night!)