45 mm sedna gold case, transparent back, 925 Silver guilloché inner bezel and subdials in OMEGA’s unique “exclusive acoustic waves” pattern: an exact visual representation of the soundwaves produced by the watch’s chimes, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, grand feu enamel white dial with a 925 Silver guilloché inner bezel and subdials in OMEGA’s unique exclusive acoustic waves pattern: an exact visual representation of the soundwaves produced by the watch’s chimes, Omega 1932 chronometer movement with chronograph and small seconds, brown leather strap with 18K Sedna Gold buckle with OMEGA’s new Quick-Change patented system. Water resistant to 30 metres (100 feet).