OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M, reference 220.10.38.20.02.001, has a steel case measuring 38 mm across. Thickness comes in at 12.24 mm with a lug-to-lug of 45 mm. The silver dial sits under a domed sapphire crystal with anti-reflective treatment on both sides. Inside is the self-winding calibre 8800, a Master Chronometer movement certified by METAS and resistant to magnetic fields up to 15,000 gauss, with a free sprung-balance and silicon balance spring. Power reserve runs to 55 hours. A date function is included, and a screw-down crown adds a further layer of security. The case is fitted to a steel bracelet with a butterfly clasp, and the display back is visible through sapphire. Water resistance is rated to 150 metres.