2025 Omega Seamaster Aqua Terra "Small Seconds" Complete Set

Omega Seamaster Aqua Terra 150M Small Seconds — Ref. 220.12.41.21.03.005

IN PRODUCTION
The Aqua Terra lineup is built around central-seconds watches on bracelet — that's the configuration most buyers picture, and it accounts for the bulk of sales. This reference breaks from both of those defaults at once. The Cal. 8916 relocates the seconds to an opaline subdial at 6 o'clock, paired with the date window, and the structured blue rubber strap with grey stitching replaces the steel bracelet. The combined effect is a watch that wears, reads, and feels nothing like the standard AT. The sun-brushed blue-grey dial shifts between slate and steel depending on the light — it's a cooler, more muted blue than the saturated ocean tone on the .03.001, and a more interesting one — and the rhodium-plated hands and indexes keep the dial furniture restrained where the blackened finishes on other AT variants push sportier. The horizontal teak pattern runs across the main dial and stops at the rhodium-plated ring surrounding the small seconds subdial, which sits as its own separately finished surface with a sandblasted seconds track that gives it visible depth rather than reading as a cutout in the main dial.
At roughly 107 grams on the rubber strap, this is nearly a third lighter than the bracelet-mounted small seconds variant at 151 grams, and the difference on the wrist across a full day is the difference between knowing you're wearing a watch and forgetting you are. The structured blue rubber integrates into the case through a solid polished stainless steel link that gives the transition the visual continuity of a bracelet endlink, and the foldover deployment clasp protects the rubber from daily buckling stress while keeping the profile flush. The Cal. 8916 visible through the exhibition caseback carries the full Master Chronometer specification — METAS certification to 0/+5 seconds per day, 15,000-gauss magnetic resistance, silicon Si14 balance spring, free-sprung balance, 60-hour power reserve from dual barrels in series — and the rhodium-plated bridges with arabesque Geneva waves give the movement side the same finishing attention as the dial. This is the Aqua Terra that wears like a dress watch, carries the specs of a sport watch, and weighs less than either.
Key Details

• Case diameter: 41 mm
• Case thickness: 13.20 mm
• Lug-to-lug: 47.90 mm
• Lug width: 20 mm
• Weight: ~107 g on rubber strap
• Case material: 316L stainless steel, symmetrical case design, wave-edged caseback
• Crystal: domed sapphire, anti-reflective treatment both sides
• Water resistance: 150 m / 15 bar
• Caseback: transparent/exhibition (sapphire)
• Bezel: fixed, stainless steel, brushed and polished
• Crown: screw-in
• Dial: sun-brushed blue-grey, horizontal "teak" pattern
• Hands: rhodium-plated, filled with white Super-LumiNova
• Hour markers: rhodium-plated applied indexes, filled with white Super-LumiNova
• Minute/seconds tracks: sandblasted on both main dial and subdial
• Small seconds: opaline subdial with rhodium-plated ring at 6 o'clock
• Date: 6 o'clock (integrated with subdial area)
• Caliber: Omega 8916 (in-house, small seconds derivative of Cal. 8900)
• Movement type: self-winding automatic, Co-Axial escapement
• Frequency: 25,200 vph / 3.5 Hz
• Jewels: 38
• Power reserve: 60 hours, dual mainspring barrels in series
• Balance: free sprung, silicon Si14 balance spring
• Anti-magnetic: >15,000 gauss
• Finishing: rhodium-plated rotor and bridges, Geneva waves in arabesque
• Certification: COSC Chronometer + METAS Master Chronometer
• Strap: structured blue rubber with grey stitching, stainless steel integration link
• Clasp: foldover deployment with push-button release, stainless steel