123.18.35.20.56.001 Omega The Omega Constellation Co-Axial Master Chronometer 123.18.35.20.56.001 is a luxury watch designed for women. It features a 35 mm stainless steel case with a fixed bezel set with pavé diamonds and a crown made of stainless steel. The shaded grey dial is decorated with a supernova pattern and has diamond hour markers, luminescent silver tone skeletonized hour hands, and a date window located at the 6 o'clock position. The watch is powered by a self-winding movement with a Co-Axial escapement, which is powered by a calibre 2500. The power reserve of the watch is approximately 48 hours. The case thickness of the watch is 10.8 mm, and the case back is transparent. The front and back of the watch are protected by sapphire crystal. The black alligator leather strap comes with a folding buckle, and the watch has a water resistance of up to 100 meters. The Omega logo is located below the 12 o'clock position. Overall, the Omega Constellation Co-Axial Master Chronometer 123.18.35.20.56.001 is a beautiful and functional watch with exquisite detailing and precision engineering.