A finished calibre
The sapphire crystal Ref. 3220.127.116.11.01.006 differs from the classic Hesalite glass Moonwatch with Ref. 318.104.22.168.01.005 not only by the material of the glass on the front and the back. Since the sapphire crystal reference has a glass back, unlike the Speedmaster with Hesalite crystal, Omega has also made some changes to the movement used: The Speedmaster 322.214.171.124.01.006 is therefore not equipped with calibre 1861, but with the slightly modified calibre 1863. The movement 1863 was rhodium-plated and finished with Geneva stripes (Côtes de Genève). Furthermore, the lever handle is not made of the plastic Delrin (polyoxymethylene POM), but of a more beautiful looking stainless steel.