The HHS III is extremely versatile.  It offers extremely quick close quarter targeting with the magnifier switched away but can instantly transition to a magnified optic effective out to longer distances.  Powered by two AA Alkaline or Lithium batteries" the HHS III can quickly adapt to many shooting situations.  The HHS III system offers wide-field optical performance with superior light transmission for visibility in a variety of lighting conditions

Features:
20 brightness settings
Water Resistant
Fog resistant internal optics
Fits MIL-STD-1913 rail 1" Weaver