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Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
  • Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001
Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001

Case #637 — Omega Seamaster Professional 300 (Blue - Steel) Ref. 210.30.42.20.03.001

$4,375.00 USD
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Case #637 — Omega Seamaster Diver 300M “Blue Wave”

Ref. 210.30.42.20.03.001

Status: Available
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards

🔎 Case Notes

The blue Seamaster Diver 300M is one of Omega’s most recognizable modern sports watches, and on its full stainless-steel bracelet it has the presence to match.

The 42 mm case surrounds a polished blue ceramic dial engraved with the Seamaster’s signature wave pattern, paired with a matching blue ceramic dive bezel. The combination of blue ceramic, polished steel, skeletonized hands, and the substantial five-link bracelet gives this version noticeably more visual weight than the rubber-strap configuration while retaining the technical character that defines the Diver 300M.

This example dates from 2024 and presents in excellent pre-owned condition. It includes its box, papers, and cards, is currently sized for approximately an 8-inch wrist, and should retain a substantial portion of Omega’s five-year factory warranty, subject to the exact warranty-card date and Omega warranty terms.

🕰️ The Evidence

  • Reference: 210.30.42.20.03.001
  • Model: Seamaster Diver 300M
  • Year: 2024
  • Case: Stainless Steel
  • Case Diameter: 42 mm
  • Lug Width: 20 mm
  • Dial: Blue Ceramic with Laser-Engraved Wave Pattern
  • Crystal: Domed Sapphire with Anti-Reflective Treatment
  • Bezel: Unidirectional Blue Ceramic
  • Crown: Screw-Down
  • Helium Escape Valve: Yes
  • Caseback: Sapphire Exhibition
  • Movement: Omega Co-Axial Master Chronometer Calibre 8800
  • Movement Type: Automatic
  • Certification: METAS Master Chronometer
  • Power Reserve: Approximately 55 Hours
  • Functions: Hours, Minutes, Central Seconds, Date
  • Water Resistance: 300 meters / 1,000 feet
  • Bracelet: Stainless Steel
  • Bracelet Fit: Approximately 8-inch wrist
  • Condition: Excellent Pre-Owned
  • Factory Warranty: Remaining Omega Factory Warranty, Subject to Exact 2024 Card Date
  • Included: Box, Papers, and Cards

🌟 Collector Provenance

The Seamaster Diver 300M has been one of Omega’s defining sports watches since 1993.

This generation brought the familiar design fully into Omega’s modern era. The wave pattern returned, now laser engraved into ceramic; the bezel moved to ceramic as well; and the movement became a METAS-certified Master Chronometer visible through the sapphire caseback.

Despite those technical changes, the watch remains immediately recognizable through its scalloped bezel, skeletonized hands, helium escape valve, and distinctive bracelet.

🌟 Technical Provenance

The Calibre 8800 is a substantial part of the appeal.

It is a Co-Axial Master Chronometer movement with approximately 55 hours of power reserve and METAS certification covering precision, magnetic resistance, power reserve, and water resistance.

The ceramic dial and bezel bring additional durability to the exterior, while 300-meter water resistance keeps the Diver 300M firmly within genuine professional dive-watch territory.

🧾 From the Case File

The bracelet configuration gives the blue Seamaster its fullest visual expression.

Where the rubber version feels sportier and lighter, the steel bracelet adds substantial wrist presence and makes the polished blue ceramic dial feel even richer against the alternating brushed and polished surfaces of the case and bracelet.

At 42 mm, it is not a small watch, but the curved case architecture and bracelet keep it balanced on the wrist. This example’s approximately 8-inch fit also means it retains generous bracelet sizing.

Add excellent condition, BPC, a 2024 date, and meaningful factory warranty remaining, and Case 637 lands in the particularly desirable space between buying traditionally pre-owned and buying new.

🗝️ BST Verdict

The quintessential modern blue Seamaster in its full steel configuration.

Ceramic, Master Chronometer certification, 300-meter capability, strong bracelet presence, and unmistakable Omega design make it an exceptionally complete everyday sports watch.

This 2024 example adds the things that matter most in the secondary market: excellent condition, complete presentation, generous sizing, and plenty of factory warranty remaining.

👉 Every case deserves a closer look.