The Omega Seamaster Aqua Terra 150M Day-Date 41.5mm (Reference 231.10.42.22.03.001) is considered rare because it was discontinued after a relatively short production run starting in 2013. Unlike the flagship time-and-date models, Omega has largely moved away from Aqua Terra complications—except for the Worldtimer—making this specific configuration a "collector's gem" on the secondary market.

• Case Size: 41.5 mm stainless steel.

• Dial: Blue "Teak Concept" vertical stripes inspired by luxury sailboat decks.

• Complications: Day window at 12 o’clock and Date window at 6 o’clock.

• Movement: Omega Co-Axial Calibre 8602, featuring an instantaneous jump for both day and date at midnight.

• Power Reserve: Approximately 55 hours.

• Water Resistance: 150 meters.