OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M, reference 220.10.41.21.01.001, has a 41 mm steel case. The case measures 13.2 mm thick with a lug-to-lug span of 47.9 mm, so it sits close to the wrist. A sapphire crystal with antireflective treatment on both sides covers the black dial. Inside is the self-winding calibre 8900, a Co-Axial Master Chronometer movement certified by METAS with resistance to magnetic fields up to 15,000 gauss, giving 60 hours of power reserve. The date and a time zone function sit alongside a screw-down crown, and a transparent caseback shows off the rhodium-plated rotor. The steel bracelet closes with a butterfly clasp. Rated to 150 metres, the case handles daily wear and swimming without issue.