The Aquis Date Calibre 400 pairs Oris's proven dive-watch architecture with the brand's flagship in-house movement. Its 43.5mm multi-piece steel case carries a striking gradient green sunray dial, a ceramic-insert unidirectional bezel, and a screw-down crown, all rated to 300 metres. Inside, Calibre 400 delivers a five-day power reserve and exceptional resistance to magnetism, backed by a 10-year warranty when registered with MyOris. The stainless steel bracelet, fitted via Oris's Quick Strap Ch...