Omega Seamaster 300 vs Omega Speedmaster Racing
Ref. 234.30.41.21.03.001 vs Ref. 329.30.44.51.01.001
The Omega Seamaster 300 and Omega Speedmaster Racing both carry the Omega name but serve different purposes — the Omega Seamaster 300 as a dive watch and the Omega Speedmaster Racing as a chronograph. At $6,400 and $8,300 respectively, the question isn't which is better — it's which better fits your collection and investment goals.
Price Comparison
Omega
Seamaster 300
Omega
Speedmaster Racing
At retail, the Omega Seamaster 300 is listed at $6,400 while the Omega Speedmaster Racing comes in at $8,300. The Omega Seamaster 300 saves you $1,900 (30% less), a meaningful difference for most buyers. On the secondary market, the gap widens: the Omega Seamaster 300 trades around $5,120 and the Omega Speedmaster Racing around $7,055, a difference of $1,935 favoring the Omega Seamaster 300. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Omega Speedmaster Racing commands an even stronger market premium of -15.0%, though currently trending downward. Both watches score equally on flip potential at 2/10, making neither a clear investment winner over the other.
Specifications
| Specification | Omega Seamaster 300 | Omega Speedmaster Racing |
|---|---|---|
| Case Diameter | 41mm | 44.25mm |
| Case Thickness | 13.85mm | 14.38mm |
| Case Material | Stainless steel | Stainless steel |
| Bezel | Blue ceramic unidirectional rotating bezel with liquidmetal diving scale | Anodized aluminium bezel ring with tachymetre scale |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal front and caseback |
| Water Resistance | 300m / 1000ft | 100m / 330ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8912 | Omega Co-Axial Master Chronometer calibre 9900 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 60 hours |
| Bracelet/Strap | Stainless steel bracelet | Stainless steel bracelet |
| Clasp | Adjustable clasp | Adjustable clasp |
| Lug Width | 20mm | 22mm |
Key specification differences stand out between these two: The Omega Seamaster 300 leads in water resistance (300m / 1000ft vs. 100m / 330ft), and the Omega Speedmaster Racing offers longer power reserve at 60 hours. With 6 notable spec differences in total, the choice depends on which features matter most to your use case.
Value Per Feature
Per millimeter of case diameter, the Omega Seamaster 300 costs $125 versus $159 for the Omega Speedmaster Racing. For water resistance, the Omega Seamaster 300 delivers better value per meter of depth rating. The Omega Seamaster 300 offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster 300 if you value a lower entry price, serious diving capabilities. Go with the Omega Speedmaster Racing if you prioritize better value retention, timing functionality.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster 300 or the Omega Speedmaster Racing?
The Omega Seamaster 300 is more accessible, priced at $6,400 compared to $8,300.
Which holds its value better on the secondary market?
The Omega Speedmaster Racing currently trades at 15.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster 300 and Omega Speedmaster Racing compare in size?
The Omega Seamaster 300 measures 41mm in diameter and 13.85mm thick, while the Omega Speedmaster Racing is 44.25mm by 14.38mm. Water resistance differs too: 300m / 1000ft versus 100m / 330ft.
What movements do these watches use?
The Omega Seamaster 300 uses the Omega Co-Axial Master Chronometer calibre 8912 with 55 hours power reserve, while the Omega Speedmaster Racing runs on the Omega Co-Axial Master Chronometer calibre 9900 offering 60 hours of power reserve.

