Mounting Smooth aluminum tube accommodates ring mounting
Waterproof and Fogproof 30mm main tube is nitrogen filled, fog proof amp waterproof to 13 feet or 4 meters
Sophisticated Optical System with 6x Zoom Magnification range offers both a wide field of view as well as the ability to zoom in for close up observation
Swarotop Coatings Proprietary up to date lens coatings increase light transmission amp micro grooves on the edges of lens elements prevent residual reflections inside the tube for bright high contrast images under all lighting conditions