This EOTech Model XPS3 Holographic Weapon Sight small and lightweight for carry convenience, plus the single Lithium battery design allows more rail space for night vision or other accessories. This sight is night vision compatible and features 30 daylight settings, 10 of which are for Night Vision. Reticle: -0 68 MOA Ring w/1 MOA Night Vision Compatible: Gen I-III Dimensions: 3.8?L x 2.1?W x 2.5?H (97 x 54 x 64mm) Weight: 9.0 oz / 255 g Water Resistant: Submersible to 33 ft./10 m Mount: 1? Weaver or MIL-STD-1913 rail Brightness: 30 daylight settings (10 for NV) Power Source: 1x 123 lithium battery Battery Life: 600 continuous hours at nominal setting 12 at room temperature