OMEGA Seamaster Aqua Terra 150M

Omega Seamaster Aqua Terra 150M, reference 220.10.38.20.01.004, has a 38 mm steel case. Thickness comes in at 12.26 mm with a lug-to-lug of 45.1 mm, and the black dial sits under a domed, antireflective sapphire crystal. A self-winding calibre 8800 drives the watch, with a Co-Axial escapement and a free sprung-balance built to resist magnetic fields up to 15,000 gauss; power reserve runs to 55 hours. Omega certifies it as a Master Chronometer, and the movement is visible through a display back. A date function sits on the dial, and the crown screws down against the case. The bracelet is steel, closed by a foldover butterfly clasp with a comfort setting. Water resistance reaches 150 metres.