OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M, reference 220.10.41.21.02.002, has a steel case measuring 41 mm across. The case stands 13.2 mm thick with a lug-to-lug span of 47.9 mm. A domed sapphire crystal with antireflective treatment on both sides covers the silver dial. Inside is the self-winding calibre 8916, a Master Chronometer movement certified by METAS with a Co-Axial escapement and resistance to magnetic fields up to 15,000 gauss, giving 60 hours of power reserve. Small seconds and date sit at six o'clock, and a sapphire window on the back exposes the movement. The screw-down crown works with a steel bracelet on a butterfly clasp. Water resistance reaches 150 metres.