Omega Speedmaster Moonwatch Professional vs Rolex Datejust 31
Ref. 310.30.42.50.01.001 vs Ref. M278271-0006
Comparing the Omega Speedmaster Moonwatch Professional to the Rolex Datejust 31 means weighing a significant price difference — is the premium justified? At $7,100 versus $14,300, 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 Moonwatch Professional
Rolex
Datejust 31
At retail, the Omega Speedmaster Moonwatch Professional is listed at $7,100 while the Rolex Datejust 31 comes in at $14,300. The Omega Speedmaster Moonwatch Professional comes in at $7,200 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap widens: the Omega Speedmaster Moonwatch Professional trades around $6,200 and the Rolex Datejust 31 around $13,585, a difference of $7,385 favoring the Omega Speedmaster Moonwatch Professional. Available at 13% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Rolex Datejust 31 commands an even stronger market premium of -5.0%, holding steady. For investors, the Rolex Datejust 31 edges ahead with a flip potential score of 4/10 compared to 2/10.
Specifications
| Specification | Omega Speedmaster Moonwatch Professional | Rolex Datejust 31 |
|---|---|---|
| Case Diameter | 42mm | 31mm |
| Case Thickness | 13.18mm | 11.3mm |
| Case Material | Stainless steel | Oystersteel and 18ct Everose gold |
| Bezel | Anodized aluminium bezel ring with tachymetre scale | 18ct Everose gold, fluted |
| Crystal | Hesalite crystal | Sapphire with Cyclops lens |
| Water Resistance | 50m / 167ft | 100m / 330ft |
| Movement | Omega Co-Axial Master Chronometer calibre 3861 | Rolex calibre 2236 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 50 hours | 55 hours |
| Bracelet/Strap | Stainless steel bracelet | Jubilee, five-piece links in Oystersteel and 18ct Everose gold |
| Clasp | Adjustable clasp | Oysterclasp with Easylink 5mm comfort extension |
| Lug Width | 20mm | 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 Moonwatch Professional uses Stainless steel while the Rolex Datejust 31 opts for Oystersteel and 18ct Everose 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 Moonwatch Professional costs $148 versus $438 for the Rolex Datejust 31. For water resistance, the Omega Speedmaster Moonwatch Professional delivers better value per meter of depth rating. The Omega Speedmaster Moonwatch Professional offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Speedmaster Moonwatch Professional if you value a lower entry price, timing functionality. Go with the Rolex Datejust 31 if you prioritize stronger flip potential, better value retention. For pure investment potential, the Rolex Datejust 31 has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster Moonwatch Professional or the Rolex Datejust 31?
The Omega Speedmaster Moonwatch Professional is more accessible, priced at $7,100 compared to $14,300.
Which watch is a better investment?
Based on current market data, the Rolex Datejust 31 has a higher flip potential score of 4/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex Datejust 31 currently trades at 5.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Speedmaster Moonwatch Professional and Rolex Datejust 31 compare in size?
The Omega Speedmaster Moonwatch Professional measures 42mm in diameter and 13.18mm 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 Moonwatch Professional uses the Omega Co-Axial Master Chronometer calibre 3861 with 50 hours power reserve, while the Rolex Datejust 31 runs on the Rolex calibre 2236 offering 55 hours of power reserve.
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