EoTech 512.A65 Tactical HWS Holographic Weapon Sight Picatinny Rail Fastened. Up to date. 2017 model. From Eotech: DescriptionModel 512 is our hottest holographic weapon sight. It’s ideal when you wish to have the most productive in speed and flexibility, with out night vision compatibility. Black color. Product DetailsNight Vision Compatibility: None Length/Width/Height: 5.6” x 2” x 2.five” (143 x 51 x 64 mm) Weight: 11.5 oz. (325 g) Water Resistant: Submersible to 10 ft. (3 m) depth Mount: 1” Weaver or MIL-STD-1913 rail Power Supply:Two 1.5 V AA batteriesSupports lithium, alkaline, or rechargeable Battery Life:Lithium: 1,000 continuous hours at nominal setting 12 at room temp.Alkaline: 600 continuous hours at nominal setting 12 at room temp.