Manual-winding movement with Co-Axial escapement. Bridges and main plate in ceramised titanium. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free-sprung balance with silicon balance spring, two barrels mounted in series. Time zone function.
All watches using this caliber:
220.127.116.11.06.003 Omega Seamaster Aqua Terra 150M Master Chronometer 41 Ultra Light Titanium / Grey - Orange / Rubber
18.104.22.168.06.002 Omega Seamaster Aqua Terra 150M Master Chronometer 41 Ultra Light Titanium / Grey - Blue / Rubber