Omega Speedmaster Professional Moonwatch vs Rolex Lady-Datejust
Ref. 3570.50.00 vs Ref. M279135RBR-0001
Comparing the Omega Speedmaster Professional Moonwatch to the Rolex Lady-Datejust means weighing a significant price difference — is the premium justified? At ~$6,000 (market value) versus $35,150, 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 Professional Moonwatch
Rolex
Lady-Datejust
The Omega Speedmaster Professional Moonwatch is priced at ~$6,000 (market value) while the Rolex Lady-Datejust comes in at $35,150. On the secondary market, the gap narrows: the Omega Speedmaster Professional Moonwatch trades around $6,000 and the Rolex Lady-Datejust around $33,393, a difference of $27,393 favoring the Omega Speedmaster Professional Moonwatch. Trading at 12% above retail and trending upward, this model holds its value well on the pre-owned market. The Rolex Lady-Datejust shows a more modest market premium of -5.0%, holding steady. For investors, the Omega Speedmaster Professional Moonwatch edges ahead with a flip potential score of 5/10 compared to 4/10.
Specifications
| Specification | Omega Speedmaster Professional Moonwatch | Rolex Lady-Datejust |
|---|---|---|
| Case Diameter | 42mm | 28mm |
| Case Thickness | 14.3mm | 10.1mm |
| Case Material | Stainless steel | 18ct Everose gold |
| Bezel | Stainless steel bezel ring with tachymetre scale | 18ct Everose gold, set with diamonds |
| 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 | Stainless steel bracelet | President, three-piece semi-circular links in 18ct Everose gold |
| Clasp | Folding clasp | Concealed folding Crownclasp |
| Lug Width | 20mm | 14mm |
Key specification differences stand out between these two: The Rolex Lady-Datejust leads in water resistance (100m / 330ft vs. 50m / 167ft), and the Rolex Lady-Datejust offers longer power reserve at 55 hours, and the Omega Speedmaster Professional Moonwatch uses Stainless steel while the Rolex Lady-Datejust opts for 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 Professional Moonwatch costs $143 versus $1,193 for the Rolex Lady-Datejust. For water resistance, the Omega Speedmaster Professional Moonwatch delivers better value per meter of depth rating. The Omega Speedmaster Professional Moonwatch offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Speedmaster Professional Moonwatch if you value a lower entry price, stronger flip potential, better value retention. Go with the Rolex Lady-Datejust if you prioritize the Rolex heritage. For pure investment potential, the Omega Speedmaster Professional Moonwatch has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster Professional Moonwatch or the Rolex Lady-Datejust?
The Omega Speedmaster Professional Moonwatch is more accessible, priced at ~$6,000 (market value) compared to $35,150.
Which watch is a better investment?
Based on current market data, the Omega Speedmaster Professional Moonwatch 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 Professional Moonwatch currently trades at 12.1% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Speedmaster Professional Moonwatch and Rolex Lady-Datejust compare in size?
The Omega Speedmaster Professional Moonwatch measures 42mm in diameter and 14.3mm thick, while the Rolex Lady-Datejust is 28mm by 10.1mm. Water resistance differs too: 50m / 167ft versus 100m / 330ft.
What movements do these watches use?
The Omega Speedmaster Professional Moonwatch uses the Omega calibre 1861 with 48 hours power reserve, while the Rolex Lady-Datejust runs on the Rolex calibre 2236 offering 55 hours of power reserve.
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