This Omega Speedmaster Mark 40, reference 3520.50, is a technically rich 39mm stainless steel chronograph featuring a black dial with day, date, and month calendar functions in addition to its chronograph. It's powered by the automatic Calibre 1151, based on a Valjoux 7751 architecture, offering roughly 44 hours of power reserve alongside its triple-calendar and 24-hour indicator functions. The case is fitted with a fixed stainless steel tachymeter bezel and a scratch-resistant sapphire crystal, and is rated water-resistant to 50 meters. Distinct from the manually-wound Moonwatch, the Mark 40 brought automatic winding and full-calendar complexity to the Speedmaster lineup. This example is fitted on its original stainless steel bracelet and offered as a watch-only piece. It is in excellent pre-owned condition with only light, normal wear.
This watch is sold as watch only — no box or papers included.
This Omega Speedmaster Mark 40, reference 3520.50, is a technically rich 39mm stainless steel chronograph featuring a black dial with day, date, and month calendar functions in addition to its chronograph. It's powered by the automatic Calibre 1151, based on a Valjoux 7751 architecture, offering roughly 44 hours of power reserve alongside its triple-calendar and 24-hour indicator functions. The case is fitted with a fixed stainless steel tachymeter bezel and a scratch-resistant sapphire crystal, and is rated water-resistant to 50 meters. Distinct from the manually-wound Moonwatch, the Mark 40 brought automatic winding and full-calendar complexity to the Speedmaster lineup. This example is fitted on its original stainless steel bracelet and offered as a watch-only piece. It is in excellent pre-owned condition with only light, normal wear.
This watch is sold as watch only — no box or papers included.
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