We are not an official dealer of Omega Watches and have no affiliation with the manufacturer. All brand names and trademarks are the property of their respective owners and are used for identification purposes only. About This Watch: This Omega Constellation Double Eagle Co-Axial Chrono 1819.51.91 has an automatic chronograph movement. It features a black dial and a scratch resistant sapphire crystal. Its finely crafted case is made out of stainless steel. This watch is water resistant up to 100 meters. “