Omega Speedmaster First Omega in Space vs Rolex Datejust 31
Ref. 311.30.42.30.01.006 vs Ref. M278274-0018
Comparing the Omega Speedmaster First Omega in Space to the Rolex Datejust 31 means weighing a significant price difference — is the premium justified? At ~$6,000 (market value) versus $10,750, 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
Datejust 31
The Omega Speedmaster First Omega in Space is priced at ~$6,000 (market value) while the Rolex Datejust 31 comes in at $10,750. On the secondary market, the gap narrows: the Omega Speedmaster First Omega in Space trades around $6,000 and the Rolex Datejust 31 around $10,000, a difference of $4,000 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 Datejust 31 shows a more modest market premium of -7.0%, holding steady. For investors, the Omega Speedmaster First Omega in Space edges ahead with a flip potential score of 5/10 compared to 3/10.
Specifications
| Specification | Omega Speedmaster First Omega in Space | Rolex Datejust 31 |
|---|---|---|
| Case Diameter | 39.7mm | 31mm |
| Case Thickness | 14.3mm | 11.3mm |
| Case Material | Stainless steel | Oystersteel and 18ct white gold |
| Bezel | Black anodized aluminium bezel ring with tachymetre scale | 18ct white gold, fluted |
| Crystal | Hesalite crystal | Sapphire with Cyclops lens |
| Water Resistance | 50m / 167ft | 100m / 330ft |
| Movement | Omega calibre 1861 | Rolex calibre 2236 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 48 hours | 55 hours |
| Bracelet/Strap | Brown leather strap | Jubilee, five-piece links |
| Clasp | Steel buckle | Oysterclasp with Easylink 5mm comfort extension |
| Lug Width | 19mm | 16mm |
Key specification differences stand out between these two: The Rolex Datejust 31 leads in water resistance (100m / 330ft vs. 50m / 167ft), and the Rolex Datejust 31 offers longer power reserve at 55 hours, and the Omega Speedmaster First Omega in Space uses Stainless steel while the Rolex Datejust 31 opts for Oystersteel and 18ct white gold. 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 $323 for the Rolex Datejust 31. For water resistance, the Rolex Datejust 31 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, stronger flip potential, better value retention. Go with the Rolex Datejust 31 if you prioritize the Rolex heritage. For pure investment potential, the Omega Speedmaster First Omega in Space has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster First Omega in Space or the Rolex Datejust 31?
The Omega Speedmaster First Omega in Space is more accessible, priced at ~$6,000 (market value) compared to $10,750.
Which watch is a better investment?
Based on current market data, the Omega Speedmaster First Omega in Space has a higher flip potential score of 5/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Omega Speedmaster First Omega in Space currently trades at 9.1% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Speedmaster First Omega in Space and Rolex Datejust 31 compare in size?
The Omega Speedmaster First Omega in Space measures 39.7mm in diameter and 14.3mm thick, while the Rolex Datejust 31 is 31mm by 11.3mm. Water resistance differs too: 50m / 167ft versus 100m / 330ft.
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 Datejust 31 runs on the Rolex calibre 2236 offering 55 hours of power reserve.
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