2017 Omega Seamaster Aqua Terra Complete Set!

Omega Seamaster Aqua Terra 150M Master Co-Axial — Ref. 231.10.42.21.03.006

DISCONTINUED — 2017
Every other Aqua Terra in the 231.xx generation wears the same vertical "Teak Concept" stripe pattern — it's the defining visual signature of the lineup. This reference breaks from that entirely. Introduced in mid-2016, it carries a sun-brushed blue dial with a transferred wave pattern borrowed from the 2016 Rio Olympics Seamaster 300M, and it's the only standard-production 41.5mm AT that made the swap. Where the teak pattern reads as nautical-formal, the wave motif pulls the watch closer to its diver-heritage Seamaster roots — a more dynamic, more oceanic personality on the wrist. Pair that with 18K yellow gold hands and applied indexes instead of the standard rhodium or silver, and the dial composition is genuinely unique in the AT catalog. The gold catches warm light against that deep blue in a way that no steel-toned furniture replicates, giving the watch a richness that reads closer to a two-tone precious-metal piece than a standard steel sport watch.
The timing of this reference is what makes it collectible. It launched in 2016 with the fully upgraded Master Co-Axial Cal. 8500 — the Version G with >15,000-gauss anti-magnetic resistance — and was discontinued roughly a year later when the entire 231.xx generation gave way to the 220.xx line. That gives it one of the shortest production windows of any mainline Aqua Terra, and Omega never replicated this specific combination — wave dial, gold furniture, steel case — in the successor generation. The exhibition caseback, 60-hour reserve, silicon balance spring, and full COSC Chronometer certification are all present, delivered in a case that still carries the 231.xx's polished beveled edges and framed date window at 3 o'clock.
Key Details

• Case diameter: 41.5 mm
• Case thickness: 12.95 mm
• Lug-to-lug: 48.50 mm
• Lug width: 20 mm
• Weight: ~153 g on bracelet
• Case material: 316L stainless steel, brushed with polished bezel and beveled edges
• Crystal: domed sapphire, anti-reflective treatment both sides
• Water resistance: 150 m / 15 bar
• Caseback: transparent/exhibition (sapphire)
• Bezel: fixed, smooth, polished stainless steel
• Crown: screw-down
• Dial: blue, sun-brushed from center, transferred wave pattern (not teak)
• Hands: 18K yellow gold, brushed tops with polished faceted edges, filled with white Super-LumiNova
• Hour markers: applied 18K yellow gold indexes, brushed tops with polished tapered edges, luminous fill
• Minute/seconds track: fine-printed with Arabic numerals at 5-minute increments
• Date: window at 3 o'clock
• Caliber: Omega 8500, Version G / Master Co-Axial (in-house)
• Movement type: self-winding automatic, Co-Axial escapement
• Frequency: 25,200 vph / 3.5 Hz
• Jewels: 39
• Power reserve: 60 hours, dual mainspring barrels in series
• Balance: free sprung, silicon Si14 balance spring
• Anti-magnetic: >15,000 gauss
• Certification: COSC Chronometer
• Bracelet: stainless steel, brushed and polished
• Clasp: butterfly deployment with push-button release