Omega Speedmaster Moonphase Co-Axial Chronograph Watch (304.33.44.52.03.001). Caliber 9904 Automatic Co-Axial Master Chronometer chronograph movement. Central chronograph hand, 12 hour counter at 3 o`clock position, Moonphase indicator at 6 o`clock position, seconds and date indicator at 9 o`clock position. Black dial and index hour marker. Blue ceramic bezel stamped with tachymeter scale set on a 44.25 stainless steel bracelet. Sapphire crystal and exhibition case back. Water resistant to 100M. Blue leather strap and steel folding buckle.