This is an authentic OMEGA Stainless Steel 41mm Seamaster Aqua Terra Master Co-Axial Chronometer Automatic Watch Blue 231.10.42.21.03.003. This timepiece is crafted of stainless steel, features self-winding movement with Co-Axial escapement, blue dial, sapphire crystal, date indicator and white luminescent hour markers and hands. Follow this item for alerts. Omega is a registered trademark of Omega. FASHIONPHILE is not affiliated with Omega.