• Dielectric high-reflective multilayer prism coatings ensure superior light transmittance
• Locking diopter control maintains your personal setting
• Waterproof (up to 1m/3.3ft for 10 minutes) and nitrogen-purged for fog-free performance
• Oil/water repellent coating - applied to both eyepiece and objective lens surfaces
• Rubber armored exterior for shock resistance and a firm non-slip grip