Bering Optics OP-LA Reflex Red Dot Sight with RBC

The Bering Optics OP-LA Relfex Red Dot Sight with Reticle Brightness Control has 1x magnification and the objective lens diameter is 25x18mm. It's parallax-free at a distance of 50 yards. The distinctive feature of OP-LA Reflex is a photo-sensor that automatically turns the device "ON" when the protective cap is lifted, and the sensor automatically adjusts the brightness of the dot according to the ambient light conditions.