OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M ref. 220.10.41.21.03.004 has a steel case measuring 41 mm across, 13.2 mm thick with a lug-to-lug span of 47.9 mm. The blue dial sits under a domed sapphire crystal with anti-reflective treatment on both sides. Inside is the self-winding calibre 8900, a Master Chronometer movement certified by METAS and resistant to magnetic fields up to 15,000 gauss, with a 60-hour power reserve. The watch adds a date function and a time zone display, and the screw-in crown supports its resistance to magnetic interference. A transparent caseback shows the finished rotor and bridges, and the watch fastens on a steel bracelet with a butterfly clasp. The case carries a 150 metre water resistance rating.