OMEGA Seamaster Aqua Terra 150M (Summer Blue)

Omega's Seamaster Aqua Terra 150M, reference 220.12.41.21.03.008, has a 41 mm steel case. The case measures 13.2 mm thick with a lug-to-lug span of 47.9 mm, and a screw-down crown protects the movement. A domed sapphire crystal with antireflective treatment on both sides covers the blue dial. Inside is the self-winding calibre 8900, a Master Chronometer movement certified by METAS with resistance to magnetic fields up to 15,000 gauss and a 60-hour power reserve. The date sits alongside a time zone function among its complications. A blue rubber strap closes with a steel foldover clasp. The screw-down crown backs up the case's 150 metre water resistance rating.