ED monocular; Extra Low Dispersion (ED) glass to eliminate chromatic aberrations to reduce color fringing; This leads to razor-sharp imagesAdvanced FMC Lenses; Fully multiple coatings are applied to all air-to-glass surfaces, maximizing light transmission and producing bright, clear, high-contrast imagesBak4 roof prism; High index Bak4 prism with phase correcting coatings to remove internal interference to improve clarity; Ensure high-contrast images8x32 monocular; Moderate 8 times the power and a super-wide field of view of 1000 m for easy detection and more comfortable viewingIPX7 waterproof monocular; Filled with nitrogen and O-ring sealed to be waterproof and fog free. This provides reliable performance in all environments and over a wide temperature range