Omega Speedmaster Moonwatch Professional 3861 Sapphire 310.30.42.50.01.002 IW544203 That integration shifts the Land-Dweller's

That integration shifts the Land-Dweller's register: it reads closer to a sports-dressed piece than the Datejust

The 7939G1A0NRU moved that function into the 39mm Black Bay 58 case in 2024 — a correction for buyers who wanted the complication but found the larger format too much wrist for daily use

This specific configuration is highly sought after for its stunning Bright Blue dial

making it equally suitable for both men and women who appreciate classic proportions

polished chamfers

Omega Speedmaster Moonwatch Professional 3861 Sapphire 310.30.42.50.01.002 IW544203 That integration shifts the Land-Dweller'sOverview The Omega Speedmaster Moonwatch Professional reference 310. 30. 42. 50. 01. 002 stands as the definitive modern iteration of one of horology's most iconic timepieces, embracing its legendary lineage while proudly showcasing its technical evolution. Directly descended from the watches worn on all six lunar missions, this model retains the timeless aesthetic of the original but is distinguished by its use of sapphire crystal on both the front