Omega Speedmaster Dark Side of the Moon vs Rolex GMT-Master II
Ref. 311.92.44.51.01.005 vs Ref. 126710BLRO
The Omega Speedmaster Dark Side of the Moon (chronograph) and Rolex GMT-Master II (gmt / travel watch) represent different approaches to luxury watchmaking. While the Omega Speedmaster Dark Side of the Moon is priced at $12,800 and the Rolex GMT-Master II at $12,350, both offer compelling value propositions. This comparison examines their specifications, market positioning, and investment potential side by side.
Price Comparison
Omega
Speedmaster Dark Side of the Moon
Rolex
GMT-Master II
At retail, the Omega Speedmaster Dark Side of the Moon is listed at $12,800 while the Rolex GMT-Master II comes in at $12,350. The two watches are priced within $450 of each other, making this a near-even matchup in terms of cost. On the secondary market, the gap widens: the Omega Speedmaster Dark Side of the Moon trades around $10,880 and the Rolex GMT-Master II around $20,500, a difference of $9,620 favoring the Omega Speedmaster Dark Side of the Moon. Available at 15% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Rolex GMT-Master II commands an even stronger market premium of +66.0%, with upward momentum. For investors, the Rolex GMT-Master II edges ahead with a flip potential score of 8/10 compared to 2/10.
Specifications
| Specification | Omega Speedmaster Dark Side of the Moon | Rolex GMT-Master II |
|---|---|---|
| Case Diameter | 44.25mm | 40mm |
| Case Thickness | 13.78mm | 13.1mm |
| Case Material | Black ceramic (ZrO2) | Oystersteel |
| Bezel | Black ceramic bezel ring with tachymetre scale | Cerachrom (ceramic) in blue and red |
| Crystal | Sapphire crystal front and caseback | Sapphire with Cyclops lens |
| Water Resistance | 50m / 167ft | 100m / 330ft |
| Movement | Omega Co-Axial Master Chronometer calibre 3861 | Rolex calibre 3285 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 50 hours | 70 hours |
| Bracelet/Strap | Black leather strap with blue rubber lining | Jubilee, five-piece links |
| Clasp | Ceramic buckle | Oysterclasp with Easylink 5mm comfort extension |
| Lug Width | 21mm | 20mm |
Key specification differences stand out between these two: The Rolex GMT-Master II leads in water resistance (100m / 330ft vs. 50m / 167ft), and the Rolex GMT-Master II offers longer power reserve at 70 hours, and the Omega Speedmaster Dark Side of the Moon uses Black ceramic (ZrO2) while the Rolex GMT-Master II 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 Dark Side of the Moon costs $246 versus $513 for the Rolex GMT-Master II. For water resistance, the Rolex GMT-Master II delivers better value per meter of depth rating. The Omega Speedmaster Dark Side of the Moon offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Speedmaster Dark Side of the Moon if you value timing functionality. Go with the Rolex GMT-Master II if you prioritize a lower entry price, stronger flip potential, better value retention. For pure investment potential, the Rolex GMT-Master II has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster Dark Side of the Moon or the Rolex GMT-Master II?
The Rolex GMT-Master II is more accessible, priced at $12,350 compared to $12,800.
Which watch is a better investment?
Based on current market data, the Rolex GMT-Master II has a higher flip potential score of 8/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex GMT-Master II currently trades at 66.0% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Speedmaster Dark Side of the Moon and Rolex GMT-Master II compare in size?
The Omega Speedmaster Dark Side of the Moon measures 44.25mm in diameter and 13.78mm thick, while the Rolex GMT-Master II is 40mm by 13.1mm. Water resistance differs too: 50m / 167ft versus 100m / 330ft.
What movements do these watches use?
The Omega Speedmaster Dark Side of the Moon uses the Omega Co-Axial Master Chronometer calibre 3861 with 50 hours power reserve, while the Rolex GMT-Master II runs on the Rolex calibre 3285 offering 70 hours of power reserve.
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