Omega Speedmaster First Omega in Space vs Rolex Sea-Dweller
Ref. 311.30.42.30.01.006 vs Ref. M126600-0002
Comparing the Omega Speedmaster First Omega in Space to the Rolex Sea-Dweller means weighing a significant price difference — is the premium justified? At ~$6,000 (market value) versus $13,600, these two watches serve different segments of the market. Here's how they stack up on specifications, value retention, and investment potential.
Price Comparison
Omega
Speedmaster First Omega in Space
Rolex
Sea-Dweller
The Omega Speedmaster First Omega in Space is priced at ~$6,000 (market value) while the Rolex Sea-Dweller comes in at $13,600. On the secondary market, the gap narrows: the Omega Speedmaster First Omega in Space trades around $6,000 and the Rolex Sea-Dweller around $16,000, a difference of $10,000 favoring the Omega Speedmaster First Omega in Space. Trading at 9% above retail and trending upward, this model holds its value well on the pre-owned market. The Rolex Sea-Dweller commands an even stronger market premium of +17.6%, holding steady. Both watches score equally on flip potential at 5/10, making neither a clear investment winner over the other.
Specifications
| Specification | Omega Speedmaster First Omega in Space | Rolex Sea-Dweller |
|---|---|---|
| Case Diameter | 39.7mm | 43mm |
| Case Thickness | 14.3mm | 14.7mm |
| Case Material | Stainless steel | Oystersteel |
| Bezel | Black anodized aluminium bezel ring with tachymetre scale | Cerachrom (ceramic) in black |
| Crystal | Hesalite crystal | Sapphire with Cyclops lens |
| Water Resistance | 50m / 167ft | 1220m / 4000ft |
| Movement | Omega calibre 1861 | Rolex calibre 3235 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 48 hours | 70 hours |
| Bracelet/Strap | Brown leather strap | Oyster, three-piece solid links |
| Clasp | Steel buckle | Oysterlock safety clasp with Fliplock extension and Glidelock extension system |
| Lug Width | 19mm | 22mm |
Key specification differences stand out between these two: The Rolex Sea-Dweller leads in water resistance (1220m / 4000ft vs. 50m / 167ft), and the Rolex Sea-Dweller offers longer power reserve at 70 hours, and the Omega Speedmaster First Omega in Space uses Stainless steel while the Rolex Sea-Dweller opts for Oystersteel. With 8 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 Speedmaster First Omega in Space costs $151 versus $372 for the Rolex Sea-Dweller. For water resistance, the Rolex Sea-Dweller delivers better value per meter of depth rating. The Omega Speedmaster First Omega in Space offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Speedmaster First Omega in Space if you value a lower entry price, timing functionality. Go with the Rolex Sea-Dweller if you prioritize better value retention, serious diving capabilities.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster First Omega in Space or the Rolex Sea-Dweller?
The Omega Speedmaster First Omega in Space is more accessible, priced at ~$6,000 (market value) compared to $13,600.
Which holds its value better on the secondary market?
The Rolex Sea-Dweller currently trades at 17.6% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Speedmaster First Omega in Space and Rolex Sea-Dweller compare in size?
The Omega Speedmaster First Omega in Space measures 39.7mm in diameter and 14.3mm thick, while the Rolex Sea-Dweller is 43mm by 14.7mm. Water resistance differs too: 50m / 167ft versus 1220m / 4000ft.
What movements do these watches use?
The Omega Speedmaster First Omega in Space uses the Omega calibre 1861 with 48 hours power reserve, while the Rolex Sea-Dweller runs on the Rolex calibre 3235 offering 70 hours of power reserve.
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