ENDURANCE 30 WA SF 4-16×50 LR DOT (8×) Wide Angle optical system Long 4″ Eye Relief 18 layer Fully Multi-Coated optics for exceptional clarity Side Focus control for parallax adjustment to infinity 30mm mono-tube chassis for superior strength Glass etched reticle with red illumination 6 levels of brightness with off positions in-between 1⁄4 MOA exposed and locking turrets Fast focus eyebell and high torque zoom ring Threaded objective for optional accessories