Omega Speedmaster Professional Moonwatch vs Rolex Sea-Dweller
Ref. 311.30.42.30.01.005 vs Ref. 116600
Comparing the Rolex Sea-Dweller to the Omega Speedmaster Professional Moonwatch means weighing a significant price difference — is the premium justified? At ~$6,000 (market value) versus ~$18,000 (market value), 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
Sea-Dweller
The Omega Speedmaster Professional Moonwatch is priced at ~$6,000 (market value) while the Rolex Sea-Dweller comes in at ~$18,000 (market value). On the secondary market, the gap widens: the Omega Speedmaster Professional Moonwatch trades around $6,000 and the Rolex Sea-Dweller around $18,000, a difference of $12,000 favoring the Omega Speedmaster Professional Moonwatch. Trading at 1% 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 +58.6%, with upward momentum. For investors, the Rolex Sea-Dweller edges ahead with a flip potential score of 9/10 compared to 4/10.
Specifications
| Specification | Omega Speedmaster Professional Moonwatch | Rolex Sea-Dweller |
|---|---|---|
| Case Diameter | 42mm | 40mm |
| Case Thickness | 14.3mm | 14.5mm |
| Case Material | Stainless steel | Oystersteel |
| Bezel | Stainless steel bezel ring with tachymetre scale | Cerachrom (ceramic) in black |
| Crystal | Hesalite crystal front, sapphire caseback | Sapphire |
| Water Resistance | 50m / 167ft | 1220m / 4000ft |
| Movement | Omega calibre 1861 | Rolex calibre 3135 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 48 hours | 48 hours |
| Bracelet/Strap | Stainless steel bracelet | Oyster, three-piece solid links |
| Clasp | Folding clasp | Oysterlock safety clasp with Fliplock extension and Glidelock extension system |
| Lug Width | 20mm | 22mm |
Key specification differences stand out between these two: The Rolex Sea-Dweller leads in water resistance (1220m / 4000ft vs. 50m / 167ft), and the Omega Speedmaster Professional Moonwatch uses Stainless steel while the Rolex Sea-Dweller opts for Oystersteel. With 7 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 $450 for the Rolex Sea-Dweller. For water resistance, the Rolex Sea-Dweller 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 timing functionality. Go with the Rolex Sea-Dweller if you prioritize stronger flip potential, better value retention, serious diving capabilities. For pure investment potential, the Rolex Sea-Dweller has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster Professional Moonwatch or the Rolex Sea-Dweller?
The Omega Speedmaster Professional Moonwatch is more accessible, priced at ~$6,000 (market value) compared to ~$18,000 (market value).
Which watch is a better investment?
Based on current market data, the Rolex Sea-Dweller has a higher flip potential score of 9/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex Sea-Dweller currently trades at 58.6% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Speedmaster Professional Moonwatch and Rolex Sea-Dweller compare in size?
The Omega Speedmaster Professional Moonwatch measures 42mm in diameter and 14.3mm thick, while the Rolex Sea-Dweller is 40mm by 14.5mm. Water resistance differs too: 50m / 167ft versus 1220m / 4000ft.
What movements do these watches use?
The Omega Speedmaster Professional Moonwatch uses the Omega calibre 1861 with 48 hours power reserve, while the Rolex Sea-Dweller runs on the Rolex calibre 3135 offering 48 hours of power reserve.
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