Leupold VX-R Patrol Riflescope 3-

Index Matched Lens system. DiamondCoat lens coating. FireDot Illumination - once activated the dot within the reticle illuminates with bright sharp definition while the rest of the reticle is non-illuminated. MST - Motion Sensor Technology. A single touch of the button or twist of the dial activates the illumination, offering several different intensity settings (depending on model) including a high/low indicator. 2nd Generation Argon/Krypton Waterproofing.