Omega Constellation Globemaster vs Tudor Black Bay GMT
Ref. 130.30.39.21.02.001 vs Ref. M79830RB-0010
The Omega Constellation Globemaster (dress watch) and Tudor Black Bay GMT (gmt / travel watch) represent different approaches to luxury watchmaking. While the Omega Constellation Globemaster is priced at $7,100 and the Tudor Black Bay GMT at $4,150, both offer compelling value propositions. This comparison examines their specifications, market positioning, and investment potential side by side.
Price Comparison
Omega
Constellation Globemaster
Tudor
Black Bay GMT
At retail, the Omega Constellation Globemaster is listed at $7,100 while the Tudor Black Bay GMT comes in at $4,150. At $2,950 less (71% savings), the Tudor Black Bay GMT offers a substantially lower entry point. On the secondary market, the gap narrows: the Omega Constellation Globemaster trades around $5,680 and the Tudor Black Bay GMT around $3,735, a difference of $1,945 favoring the Tudor Black Bay GMT. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Tudor Black Bay GMT commands an even stronger market premium of -10.0%, holding steady. Both watches score equally on flip potential at 2/10, making neither a clear investment winner over the other.
Specifications
| Specification | Omega Constellation Globemaster | Tudor Black Bay GMT |
|---|---|---|
| Case Diameter | 39mm | 41mm |
| Case Thickness | 12.41mm | 14.8mm |
| Case Material | Stainless steel | Stainless steel |
| Bezel | Stainless steel fluted bezel | Bidirectional rotating bezel with anodized aluminium insert in burgundy and blue |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal |
| Water Resistance | 100m / 330ft | 200m / 660ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8900 | Tudor Calibre MT5652 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 70 hours |
| Bracelet/Strap | Stainless steel bracelet | Fabric NATO strap in burgundy and blue |
| Clasp | Folding clasp | Buckle |
| Lug Width | 19mm | 22mm |
Key specification differences stand out between these two: The Tudor Black Bay GMT leads in water resistance (200m / 660ft vs. 100m / 330ft), and the Tudor Black Bay GMT offers longer power reserve at 70 hours. 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 Constellation Globemaster costs $146 versus $91 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 Constellation Globemaster if you value the Omega heritage. Go with the Tudor Black Bay GMT if you prioritize a lower entry price, better value retention.
Frequently Asked Questions
Which is more affordable, the Omega Constellation Globemaster or the Tudor Black Bay GMT?
The Tudor Black Bay GMT is more accessible, priced at $4,150 compared to $7,100.
Which holds its value better on the secondary market?
The Tudor Black Bay GMT currently trades at 10.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Constellation Globemaster and Tudor Black Bay GMT compare in size?
The Omega Constellation Globemaster measures 39mm in diameter and 12.41mm thick, while the Tudor Black Bay GMT is 41mm by 14.8mm. Water resistance differs too: 100m / 330ft versus 200m / 660ft.
What movements do these watches use?
The Omega Constellation Globemaster uses the Omega Co-Axial Master Chronometer calibre 8900 with 55 hours power reserve, while the Tudor Black Bay GMT runs on the Tudor Calibre MT5652 offering 70 hours of power reserve.