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Seamaster · Seamaster 300

Omega Seamaster 300 234.63.41.21.99.002

Ref. 234.63.41.21.99.002 · Blue dial · In production

  • Case41 mm
  • Thick14.65 mm
  • Lug-to-lug48 mm
  • Water res.300 m
  • MovementAutomatic
  • CrystalSapphire
New (US list price)$48,700Source: omegawatches.com, checked 3 Nov 2026Search Amazon →Paid link · disclosure
Wrist fitChecking…

Uses the same sizing guide as Watch Finder. A guide, not a rule.

Omega Seamaster 300 234.63.41.21.99.002 size, specs and price at a glance

The Omega Seamaster 300 234.63.41.21.99.002 is 41 mm wide and 14.65 mm thick, with a lug-to-lug length of 48 mm. It takes 21 mm straps and ships on a bracelet. Inside is the Omega 8913 automatic calibre, water resistant to 300 m. US list price: $48,700 when we last checked omegawatches.com (3 Nov 2026).

Strap shopping? See our Omega lug width chart.

Overview

The Omega 234.63.41.21.99.002 is a diver watch from the Seamaster collection, part of the Seamaster 300 family. It has a 41 mm gold case, 14.65 mm thick, 48 mm from lug to lug. Omega lists the dial as blue. Inside is an automatic movement (calibre Omega 8913) with 60 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a bracelet.

Who it suits

  • Wrists of roughly 16.4–18.3 cm (6.4–7.2 in), by our Watch Finder sizing guide
  • Swimming, snorkelling and diving
  • People who enjoy seeing a mechanical movement at work

Strengths

  • Sapphire crystal resists scratches
  • 300 m water resistance
  • Screw-down crown helps keep water out
  • Display caseback shows the movement

Trade-offs

  • Thick at 14.65 mm: harder to slide under a cuff

Written by Watch.co from the published specs below. These are not owner reviews.

Full specifications

Movement

Movement typeAutomaticomegawatches.com · 3 Nov 2026
CalibreOmega 8913omegawatches.com · 3 Nov 2026
Power reserve60 homegawatches.com · 3 Nov 2026
CertificationMETAS Master Chronometeromegawatches.com · 3 Nov 2026

Strap / Bracelet

Bracelet / strapBraceletomegawatches.com · 3 Nov 2026
Lug width21 mmomegawatches.com · 3 Nov 2026

Other

US list price (MSRP)$48,700omegawatches.com · 3 Nov 2026
Production statusIn productionomegawatches.com · 3 Nov 2026
Style (our classification)Diverour classification

Specs are summarised in our own words from the brand's product page. Each row links its source and the date we checked it. Fields we haven't verified are left out rather than guessed.

Variants with the same specs

Same case, movement and bracelet or strap; typically a different dial or finish.

More in Seamaster 300

Similar alternatives

Picked with Watch Finder's style tags and sizing.

Questions about the Omega Seamaster 300 234.63.41.21.99.002

How big is the Omega Seamaster 300 234.63.41.21.99.002?

The case is 41 mm wide, 14.65 mm thick and 48 mm from lug to lug.

What movement does the Omega Seamaster 300 234.63.41.21.99.002 use?

It uses the Omega 8913 calibre, a automatic movement with 60 h of power reserve.

Can I swim with the Omega Seamaster 300 234.63.41.21.99.002?

Yes. It is rated to 300 m.

How much is the Omega Seamaster 300 234.63.41.21.99.002?

The US list price was $48,700 on omegawatches.com when we checked on 3 Nov 2026. Prices change, so check before you buy.

Will the Omega Seamaster 300 234.63.41.21.99.002 fit my wrist?

By our sizing guide it sits best on wrists of about 16.4–18.3 cm (6.4–7.2 in). Use the fit checker on this page to test your own wrist.

Watch.co is independent and not affiliated with any brand. Brand names are used only to identify products.