This model retains the oversized crown and pointer date function of the original Big Crown watches. It features a new a new in-house developed hand-wound movement, Calibre 473, a 38mm stainless steel case, a lagoon blue dial, and a sustainable deer leather strap. The Calibre 473 is a milestone for Oris, marking our 10th in-house developed calibre in a decade. It's the first hand-wound movement in the Calibre 400 Series and the first to feature a power reserve indicator, visible through the watch's case back. This exemplifies the joy of mechanics. Multi-piece stainless steel case.Sapphire, domed on both sides, anti-reflective coating inside.Stainless steel, screwed, see-through sapphire glass. Centre hands for hours and minutes, subsidiary second at 6 h, date centre hand, instantaneous date, date corrector, fine timing device and stop-second, power reserve display on bridge side