Steel Omega Seamaster Aqua Terra chronometer. Omega Caliber 2500 automatic co-axial movement. Brushed steel case, 39.2mm diameter. White dial with bronze index hour markers, bronze hands, outer track minute markers. Polished steel bezel. Brushed steel bracelet with concealed folding clasp. Box and papers. Pre-owned UNUSED. Omega reference 2503.33.400