1926 36mm M91451-0004 Square Halo The watch is driven by

The watch is driven by the OMEGA Co-Axial Master Chronometer Calibre 3861

Riveted steel bracelet with polished and satin finish with folding clasp and safety catch

Manufacture Calibre MT5652 (COSC) Self-winding mechanical movement with bidirectional rotor systemBuilt-in architecture

They feature a single 3mm genuine birthstone set in high polished white gold

Black dial with diamond hour markers

1926 36mm M91451-0004 Square Halo The watch is driven by36mm steel case with polished finish Black dial, embossed decoration, domed, with 5 diamondsGold hour markers and handsDate at 3 o'clock Waterproof to 100m (330 ft) Smooth bezel in rose gold, with polished finish Sapphire crystal Self winding mechanical movement, Calibre T601 Power reserve of approximately 38 hours Steel screw down winding crown with the TUDOR logo in relief Steel and rose gold bracelet, 7 rows, satin brushed external links, polished