Omega Speedmaster Dark Side of the Moon
Ref. 311.92.44.51.01.005
Tudor Black Bay GMT
Ref. M79830RB-0001
Omega Speedmaster Dark Side of the Moon vs Tudor Black Bay GMT
Ref. 311.92.44.51.01.005 vs Ref. M79830RB-0001
Comparing the Tudor Black Bay GMT to the Omega Speedmaster Dark Side of the Moon means weighing a significant price difference — is the premium justified? At $12,800 versus $4,600, 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 Dark Side of the Moon
Tudor
Black Bay GMT
At retail, the Omega Speedmaster Dark Side of the Moon is listed at $12,800 while the Tudor Black Bay GMT comes in at $4,600. The Tudor Black Bay GMT comes in at $8,200 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap narrows: the Omega Speedmaster Dark Side of the Moon trades around $10,880 and the Tudor Black Bay GMT around $3,800, a difference of $7,080 favoring the Tudor Black Bay GMT. Available at 15% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Tudor Black Bay GMT shows a more modest market premium of -17.4%, though currently trending downward. Both watches score equally on flip potential at 2/10, making neither a clear investment winner over the other.
Specifications
| Specification | Omega Speedmaster Dark Side of the Moon | Tudor Black Bay GMT |
|---|---|---|
| Case Diameter | 44.25mm | 41mm |
| Case Thickness | 13.78mm | 14.8mm |
| Case Material | Black ceramic (ZrO2) | Stainless steel |
| Bezel | Black ceramic bezel ring with tachymetre scale | Bidirectional rotating bezel with anodized aluminium insert in burgundy and blue |
| Crystal | Sapphire crystal front and caseback | Sapphire crystal |
| Water Resistance | 50m / 167ft | 200m / 660ft |
| Movement | Omega Co-Axial Master Chronometer calibre 3861 | Tudor Calibre MT5652 |
| Movement Type | Manual-winding | Automatic |
| Power Reserve | 50 hours | 70 hours |
| Bracelet/Strap | Black leather strap with blue rubber lining | Stainless steel with riveted-style links |
| Clasp | Ceramic buckle | Folding clasp with safety catch |
| Lug Width | 21mm | 22mm |
Key specification differences stand out between these two: The Tudor Black Bay GMT leads in water resistance (200m / 660ft vs. 50m / 167ft), and the Tudor Black Bay GMT offers longer power reserve at 70 hours, and the Omega Speedmaster Dark Side of the Moon uses Black ceramic (ZrO2) while the Tudor Black Bay GMT opts for Stainless steel. 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 $93 for the Tudor Black Bay GMT. For water resistance, the Tudor Black Bay GMT delivers better value per meter of depth rating. The Tudor Black Bay GMT offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Speedmaster Dark Side of the Moon if you value better value retention, timing functionality. Go with the Tudor Black Bay GMT if you prioritize a lower entry price.
Frequently Asked Questions
Which is more affordable, the Omega Speedmaster Dark Side of the Moon or the Tudor Black Bay GMT?
The Tudor Black Bay GMT is more accessible, priced at $4,600 compared to $12,800.
Which holds its value better on the secondary market?
The Omega Speedmaster Dark Side of the Moon currently trades at 15.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Speedmaster Dark Side of the Moon and Tudor Black Bay GMT compare in size?
The Omega Speedmaster Dark Side of the Moon measures 44.25mm in diameter and 13.78mm thick, while the Tudor Black Bay GMT is 41mm by 14.8mm. Water resistance differs too: 50m / 167ft versus 200m / 660ft.
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 Tudor Black Bay GMT runs on the Tudor Calibre MT5652 offering 70 hours of power reserve.
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