OMEGA Seamaster Aqua Terra 150M

The Omega Seamaster Aqua Terra 150M, reference 220.12.41.21.02.002, has a 41 mm steel case. Thickness measures 13.2 mm with a lug-to-lug span of 47.9 mm. The case is fitted with a screw-down crown and a domed sapphire crystal treated with antireflective coating on both sides. 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 silver dial shows the date, and a transparent caseback reveals the movement's rhodium-plated rotor and bridges. This is a chronometer built to Omega's own certification standard beyond COSC. It comes on a grey rubber strap with a steel foldover clasp. That same clasp keeps the case sealed to 150 metres.