The new CDS-ZL2 (Custom Dial System ZeroLock 2) elevation and ZeroLock windage dial lock in place so they cannot be inadvertently rotated o their zero. A mere press of a button will allow the user to dial up two turns of elevation, if necessary. On the 2nd revolution of the elevation dial, the button sinks in to show you are on the 2nd turn so you can dial for extended ranges and never lose your place. All VX-6HD CDS-ZL2 riflescopes include one free Custom Ballistic Dial with purchase. To make scope mounting even easier, we added an in-scope Electronic Reticle Level indicator for precise leveling, and a throw lever for fast magnification changes, right or left handed. All VX-6HD scopes include illuminated reticles with an easy to use 1 button intensity adjustment.