OMEGA Seamaster Aqua Terra 150M

The Omega Seamaster Aqua Terra 150M, reference 220.13.41.21.10.001, has a 41 mm steel case. It measures 13.2 mm thick with a lug-to-lug of 47.9 mm. The green dial sits under a domed, scratch-resistant sapphire crystal with anti-reflective treatment on both sides. Inside is the self-winding calibre 8900, a Master Chronometer movement with Co-Axial escapement, resistant to magnetic fields up to 15,000 gauss and rated at 60 hours of power reserve. It also has a date function and a time zone function, and the case has a screw-down crown. A sapphire display back shows the movement's rhodium-plated rotor and Geneva waves in arabesque. The green leather strap closes with a steel foldover clasp, and the case holds a 150 metre water resistance rating.