Omega Seamaster Planet Ocean 600M vs Tudor Black Bay GMT S&G
Ref. 215.30.44.21.03.001 vs Ref. M79833MN-0003
The Omega Seamaster Planet Ocean 600M (dive watch) and Tudor Black Bay GMT S&G (gmt / travel watch) represent different approaches to luxury watchmaking. While the Omega Seamaster Planet Ocean 600M is priced at $7,300 and the Tudor Black Bay GMT S&G at $5,825, both offer compelling value propositions. This comparison examines their specifications, market positioning, and investment potential side by side.
Price Comparison
Omega
Seamaster Planet Ocean 600M
Tudor
Black Bay GMT S&G
At retail, the Omega Seamaster Planet Ocean 600M is listed at $7,300 while the Tudor Black Bay GMT S&G comes in at $5,825. The Tudor Black Bay GMT S&G saves you $1,475 (25% less), a meaningful difference for most buyers. On the secondary market, the gap narrows: the Omega Seamaster Planet Ocean 600M trades around $5,840 and the Tudor Black Bay GMT S&G around $5,243, a difference of $597 favoring the Tudor Black Bay GMT S&G. 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 S&G 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 Seamaster Planet Ocean 600M | Tudor Black Bay GMT S&G |
|---|---|---|
| Case Diameter | 43.5mm | 41mm |
| Case Thickness | 14.41mm | 14.8mm |
| Case Material | Stainless steel | Stainless steel and yellow gold |
| Bezel | Blue ceramic unidirectional rotating bezel with diving scale | Bidirectional rotating bezel with anodized aluminium insert in brown and black |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal |
| Water Resistance | 600m / 2000ft | 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 | Stainless steel and yellow gold with riveted-style links |
| Clasp | Folding clasp with diver extension | Folding clasp with safety catch |
| Lug Width | 21mm | 22mm |
Key specification differences stand out between these two: The Omega Seamaster Planet Ocean 600M leads in water resistance (600m / 2000ft vs. 200m / 660ft), and the Tudor Black Bay GMT S&G offers longer power reserve at 70 hours, and the Omega Seamaster Planet Ocean 600M uses Stainless steel while the Tudor Black Bay GMT S&G opts for Stainless steel and yellow 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 Seamaster Planet Ocean 600M costs $134 versus $128 for the Tudor Black Bay GMT S&G. For water resistance, the Omega Seamaster Planet Ocean 600M delivers better value per meter of depth rating. The Tudor Black Bay GMT S&G offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Planet Ocean 600M if you value serious diving capabilities. Go with the Tudor Black Bay GMT S&G if you prioritize a lower entry price, better value retention.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Planet Ocean 600M or the Tudor Black Bay GMT S&G?
The Tudor Black Bay GMT S&G is more accessible, priced at $5,825 compared to $7,300.
Which holds its value better on the secondary market?
The Tudor Black Bay GMT S&G currently trades at 10.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster Planet Ocean 600M and Tudor Black Bay GMT S&G compare in size?
The Omega Seamaster Planet Ocean 600M measures 43.5mm in diameter and 14.41mm thick, while the Tudor Black Bay GMT S&G is 41mm by 14.8mm. Water resistance differs too: 600m / 2000ft versus 200m / 660ft.
What movements do these watches use?
The Omega Seamaster Planet Ocean 600M uses the Omega Co-Axial Master Chronometer calibre 8900 with 55 hours power reserve, while the Tudor Black Bay GMT S&G runs on the Tudor Calibre MT5652 offering 70 hours of power reserve.
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