No one understands the need for uncompromising accuracy better than SIG SAUER. SIG has developed truly game-changing optics for all types of shooters: military, law enforcement, hunters and competitive shooters.Features :Inspired by MIL-SPEC ROMEO-M17Forged 7075 Aluminum HousingPatent-Pending Beryllium Copper Flexure ArmDistortion Free Aspherical LensMOTAC (Motion Activated Illumination)Circle Dot With Individually Selectable 2 MOA Dot & 32 MOA CircleLow Deck Height for Standard-Height Iron Sight Co-Witness20,000 Hour Battery Life With Side Load Battery15 Illumination Settings Including 3 Night Vision