Omega Seamaster Aqua Terra 150M Master Chronometer 39mm

39mm case diameter, stainless steel case.
Sun‑pattern dial.
Screw‑down embossed conical crown.
Wave‑pattern case back.
Double‑sided anti‑reflection sapphire crystal.
Leather strap / steel bracelet optional.
Equipped with modified 8800 automatic movement, black balance wheel, bidirectional winding.