Omega Seamaster Planet Ocean 600M vs Tudor Black Bay 58
Ref. 215.30.44.21.03.001 vs Ref. M79030B-0001
In the dive watch category, the Omega Seamaster Planet Ocean 600M and Tudor Black Bay 58 go head to head — two of the most sought-after options from rival manufacturers. The Omega Seamaster Planet Ocean 600M at $7,300 and the Tudor Black Bay 58 at $4,275 each bring unique strengths. Here's our detailed breakdown of how they compare on specs, pricing, and market value.
Price Comparison
Omega
Seamaster Planet Ocean 600M
Tudor
Black Bay 58
At retail, the Omega Seamaster Planet Ocean 600M is listed at $7,300 while the Tudor Black Bay 58 comes in at $4,275. At $3,025 less (71% savings), the Tudor Black Bay 58 offers a substantially lower entry point. On the secondary market, the gap narrows: the Omega Seamaster Planet Ocean 600M trades around $5,840 and the Tudor Black Bay 58 around $3,900, a difference of $1,940 favoring the Tudor Black Bay 58. 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 58 commands an even stronger market premium of -8.8%, 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 58 |
|---|---|---|
| Case Diameter | 43.5mm | 39mm |
| Case Thickness | 14.41mm | 11.9mm |
| Case Material | Stainless steel | Stainless steel |
| Bezel | Blue ceramic unidirectional rotating bezel with diving scale | Unidirectional rotating bezel with anodized aluminium insert in blue |
| 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 MT5402 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 70 hours |
| Bracelet/Strap | Stainless steel bracelet | Stainless steel with riveted-style links |
| Clasp | Folding clasp with diver extension | Folding clasp with safety catch |
| Lug Width | 21mm | 20mm |
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 58 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 Seamaster Planet Ocean 600M costs $134 versus $100 for the Tudor Black Bay 58. For water resistance, the Omega Seamaster Planet Ocean 600M delivers better value per meter of depth rating. The Tudor Black Bay 58 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 58 if you prioritize a lower entry price, better value retention, serious diving capabilities.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Planet Ocean 600M or the Tudor Black Bay 58?
The Tudor Black Bay 58 is more accessible, priced at $4,275 compared to $7,300.
Which holds its value better on the secondary market?
The Tudor Black Bay 58 currently trades at 8.8% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster Planet Ocean 600M and Tudor Black Bay 58 compare in size?
The Omega Seamaster Planet Ocean 600M measures 43.5mm in diameter and 14.41mm thick, while the Tudor Black Bay 58 is 39mm by 11.9mm. 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 58 runs on the Tudor Calibre MT5402 offering 70 hours of power reserve.