The Leupold VX-6 HD Rifle Scope utilizes the Twilight Max Light Management System to give you bright, high-definition images at dawn and dusk when game is most active. A 6:1 zoom ratio and an extreme fast-focus eyepiece ensures you can go from a wide field of view to up close and personal in an instant. 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. With a mere press of a button, the CDS-ZL2 (Custom Dial System ZeroLock 2) elevation dial allows you to dial up two turns of elevation. On the 2nd revolution of the elevation dial, the button sinks in to show you are on the 2nd turn so you can dial up for extended ranges and never lose your place. The CDS-ZL2 elevation dial locks into place with the ZeroLock windage dial so they cannot be inadvertently rotated out of zero. A free Custom Ballistic Dial is included with the purchase of every Leupold VX-6 HD Rifle Scope. Every CDS dial features 1/4-MOA click finger adjustments with no dial covers to lose. Guard-Ion lens coating sheds rain, dirt, and fingerprints; and it is extremely durable and scratch resistant. The 30mm main tube, made of 6061-T6 aircraft aluminum, is waterproof and fogproof. 6:1 zoom ratio Twilight Max Light Management System High-definition images at dawn and dusk Custom Dial System ZeroLock 2 1/4-MOA finger adjustments CDS-ZL2 elevation dial ZeroLock windage dial Fast-focus eyepiece 30mm main tube Generous eyebox