OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M, reference 220.12.38.20.03.001, comes in a 38 mm steel case. It measures 12.24 mm thick with a lug-to-lug span of 45 mm, and the blue dial sits beneath a domed sapphire crystal with anti-reflective treatment on both sides. The self-winding calibre 8800 drives the watch, fitted with a Co-Axial escapement and a free sprung-balance on a silicon spring, and it holds a 55 hour power reserve. Certified as a Master Chronometer, the movement resists magnetic fields up to 15,000 gauss, and the case carries a date function and a screw-down crown. A transparent caseback shows the movement from behind. The Aqua Terra is fitted to a blue rubber strap with a steel foldover clasp. Its screw-down crown backs up a 150 metre water resistance rating.