Omega Seamaster Aqua Terra Master Co-Axial Ref 231.10.42.21.02.004 , 41.5 MM stainless steel case on a stainless steel bracelet, Silver dial with a teak concept pattern, facetted blue hour and minute hand and a yellow gold seconds hand, Features the in-house manufactured 8500 caliber. The caliber 8500 beats at 28,800, contains 39 jewels, unworn with box and papers