The Leupold VX-3HD Rifle Scope features a 3:1 zoom ratio and a fast-focus eyepiece, allowing you to go from a wide field of view to up close and personal in an instant. With a mere press of a button on the CDS ZeroLock elevation dial, you can dial up 2 turns of elevation without losing zero. Every CDS dial features 1/4-MOA click finger adjustments. The VX-3HD utilizes Twilight Max Light Management System and blackened lens edges to give you bright, high-definition images at dawn and dusk. A generous eyebox enables you to get your eye behind the rifle scope and achieve a full, clear sight picture effortlessly, whether setting up for long shots or acquiring your target quickly on dangerous game. Guard-Ion lens coating sheds rain, dirt, and fingerprints; and it is extremely durable and scratch resistant. The main tube is made of 6061-T6 aircraft aluminum, and is sealed with a Argon/Krypton gas blend for waterproof and fogproof integrity. Leupold VX-3HD Rifle Scope models with illuminated reticles feature MST (Motion Sensor Technology) that automatically deactivates illumination after 5 minutes of inactivity. 3:1 zoom ratio CDS ZeroLock dials 1/4-MOA finger adjustments Twilight Max Light Management Blackened lens edges Fast-focus eyepiece Generous eyebox Guard-Ion lens coating Waterproof/fogproof