The entire SP series of red dot sights provides crystal clear, parallax-free, fast-sighting capabilities. The brightly illuminated red dot contrasts sharply against the background under bright and low lighting conditions. SP series sights are waterproof and shock proof, guaranteed to with stand heavy recoil from the large magnum calibers. All models have precision click adjustments for windage and elevation. The handy dot intensity control switch has eleven settings to quickly fine-tune brightness adjustments. 30mm red dot has an extra wide field of view - wider than any other dot sight available in its class. Ring mounts, lens cover and a battery are included accessories for SP sights.