OMEGA Seamaster Aqua Terra 150M

Omega's Seamaster Aqua Terra 150M, reference 220.52.41.21.03.001, is a 41 mm case in Sedna gold. The case measures 13.2 mm thick with a lug-to-lug of 47.9 mm, and the blue dial sits under a domed sapphire crystal with antireflective treatment on both sides. Inside is the self-winding calibre 8901, a Master Chronometer movement certified by METAS and resistant to magnetic fields up to 15,000 gauss, with a freesprung balance and a silicon balance spring. Power reserve runs to 60 hours. Beyond the date function, the movement includes a time zone display for a second reading. A screw-down crown protects the movement, and a transparent caseback shows it off. The blue rubber strap closes with a foldover clasp in Sedna gold. Water resistance reaches 150 metres, or 15 bar.