High Definition optical system for sharpened clarity. Twilight Max Light Management System for low-light performance. Custom Dial System ZeroLock 2 elevation and ZeroLock windage dial lock in place. In-scope Electronic Reticle Level indicator for precise leveling. Throw lever for fast magnification changes. 1/4 MOA finger click adjustments. 6061-T6 aircraft aluminum construction. Alumina flipback lens covers included. Generous eyebox. Guard-Ion rain shedding coating. Waterproof and fogproof design.