Night Owl 4-Power Waterproof Monocular is IP67 compliant: waterproof and submersible; High-quality generation-1 image intensifier tube; Built-in columnated infrared illuminator for use in complete darkness or to improve target recognition in any environment; Objective and ocular lenses made of high-quality all-glass optics; Rubberized aqua deep-blue finish with integrated rubber hand-grip; Machined aluminum lens housing.