The dark blue 12x25 H2O Compact Binoculars from Bushnell are designed for long-range use in and around the water, with an anti-reflection fully multicoated lens system and BAK4 roof prism optical path designed to work together and transmit clear images with enhanced contrast and accurate color representation. Bushnell built them using ecologically friendly glass that is manufactured without lead to be better for the environment. Updated lightweight aluminum body construction Fully multi-coated all glass optics system Folding roof prism design with BAK-4 optics Non-slip aggressive texture for confident grip Rubber housing for drop protection Ideal for nature viewing, outdoor recreation, and sport spectating