Complementing the Holographic Hybrid Sight (HHS) line up, the HHS III, featuring a 518-2 with a G33 magnifier, delivers both close-quarter and long-range shooting capability. The HHS III takes EOTECH?s top sight features and adds easy-to-find AA battery compatibility. A quick Switch-To-Side (STS) mount allows for fast, simple disengagement of the magnifier. Specifications: Dimension: 9.5" X 2.3" X 3.3" Weight: 25oz Water Resistant: 10ft (3m) Color: BLACK Mount: Quick Detach lever fits both 1" Weaver and Mil-STD -1913 Rail Magnification: 3X Brightness: 20 settings Power Source: 1-123 lithium battery Battery Life: up to 2500 continuous hours (lithium) or 2200 continuous hours (alkaline) at nominal setting 12 Reticle: 68 MOA ring with (2) 1 MOA dot Night Vision Compatible: NO.