Omega Speedmaster Moonwatch Professional 42mm Sedna Gold/Steel Leather Strap 310.23.42.50.99.001

Few watches carry the cultural and horological weight of the Omega Speedmaster Moonwatch Professional. First introduced in 1957 as a racing chronograph and then famously selected by NASA for all crewed space missions, the Speedmaster has earned its place not only in the history books but also on the wrists of astronauts, test pilots, and discerning collectors across seven decades. Reference 310.23.42.50.99.001 represents a contemporary evolution of that unbroken legacy, pairing the iconic 42mm Moonwatch case with the warmth and prestige of Omega's proprietary Sedna Gold alloy.

Sedna Gold is Omega's own patented 18-karat rose-gold alloy, engineered to resist fading and maintain its rich, rosy hue longer than conventional red-gold compositions. On this reference, Sedna Gold elements are combined with stainless steel to create a two-tone contrast that feels both sporty and luxurious—a balance the Speedmaster line has always struck with confidence. The result is a watch that transitions effortlessly from a formal dinner to a weekend adventure without missing a beat.

The dial of this 310.23.42.50.99.001 is finished in a warm pink tone with index hour markers, lending the watch a refined, contemporary character that sets it apart from the classic black-dial configurations most commonly associated with the Moonwatch Professional. The tachymeter scale on the bezel—a functional tool for measuring speed over a known distance—remains faithful to the original Speedmaster design language and serves as an ever-present reminder of this watch's motorsport and aerospace DNA.

Powered by a manual-winding movement, this Speedmaster stays true to the purist tradition of the Moonwatch. A hand-wound caliber demands a daily ritual of crown-winding that deepens the connection between owner and timepiece—a deliberate, satisfying act that automatic movements simply cannot replicate. The 42mm case size is the definitive Moonwatch dimension, sitting with authority on a broad range of wrist sizes while remaining instantly recognizable as the real Moonwatch silhouette.

The leather strap grounds this precious-metal and steel combination in classic elegance, softening the wrist presence and underscoring the dressy versatility of the reference. Whether you are adding a statement piece to a serious collection or purchasing your first true luxury chronograph, the 310.23.42.50.99.001 delivers iconic design, genuine provenance, and the enduring prestige of the Omega name.

At Bizak & Co., this watch is offered brand new, complete with box and papers, ensuring full manufacturer warranty coverage and total peace of mind. Our team of knowledgeable specialists is available to answer any questions and guide you through your purchase. Browse the Omega Speedmaster Moonwatch Professional 310.23.42.50.99.001 for sale now at bizakandco.com, or reach out directly to experience the Bizak standard of service.