The Fujinon Stabiscope S 16x40 Binoculars represent the ultimate tier of military-grade tracking optics, custom-engineered for high-speed police airborne patrols, coast guard surveillance, and elite maritime search-and-rescue teams. This professional tracking system relies on a high-speed internal motor-driven gyroscopic gimbal system correcting up to ±5 degrees of extreme, multi-axis motion, providing a perfectly fluid image from banking helicopters or bucking patrol boats. The high-performance optical path incorporates flat field flattener lenses that completely iron out edge distortion and astigmatism to deliver crisp focus from center-to-corner across the view. All lens surfaces are layered with Fujinon's proprietary Electron Beam Coating (EBC) multi-coatings to maximize light transmission and guarantee exceptional contrast in intense open-ocean glare environments. Built to survive punishing tactical missions, the 100% waterproof, nitrogen-purged chassis is wrapped in shock-absorbing armor and offers flexible power configurations via AA batteries, 2CR5 cells, or direct aircraft DC vehicle power. These binoculars come with a hard case. Fujinon Stabiscope S 16x40 Water Resistant Binoculars w/ Gyroscopic Stabilization, Lens Multicoating, Field Flattener Lenses 16330354