OMEGA Speedmaster series 3577.50.00 watch, stainless steel case, blue zirconia [ZrO2] ceramic bezel, and decorated with white enamel speed measuring scale, silver white dial decorated with blue PVD treatment of angular time mark and hands, close bottom, decorated with tribute to the "Apollo" 13 mission and Omega "Snoopy Award" and other black engraved elements, Custom Model 3861 manual mechanical timing, 42 mm.