Omega Seamaster Aqua Terra Co-Axial Master Chronometer 220.10.38.20.03.003. Caliber 8800 automatic movement with Co-Axial escapement, certified Master Chronometer and 55 hours power reserve. Central seconds hand. Date window at the 6 o’clock position. bay green dial with index hour markers. Steel bezel set on a 38mm stainless steel case. Sapphire crystal on top and exhibition case back. Water resistant to 150m. Stainless steel bracelet.