Sig Sauer Romeo5 XDR Red Dot AAA. Waterproof up to 1 meter. M1913 Picatinny low mount riser and a co-witness 1.41?? MOTAC (Motion Activated Illumination) which powers the optic up when it senses motion and powers it down when it doesn't.This item may be regulated for export by the U. Department of State or US Department of Commerce. Length: 2.47 / 62.7mm. Width: 1.5 / 38.1mm. Height: 1.52 / 38.6mm. 2MOA Dot with 65MOA Circle. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "euroopticltd" and is located in this country: US. This item can be shipped to United States.