Omega Seamaster Planet Ocean 600M GMT
Ref. 215.30.44.22.01.001
Omega Speedmaster '57
Ref. 332.12.41.51.01.001
Omega Seamaster Planet Ocean 600M GMT vs Omega Speedmaster '57
Ref. 215.30.44.22.01.001 vs Ref. 332.12.41.51.01.001
The Omega Seamaster Planet Ocean 600M GMT and Omega Speedmaster '57 both carry the Omega name but serve different purposes — the Omega Seamaster Planet Ocean 600M GMT as a gmt / travel watch and the Omega Speedmaster '57 as a chronograph. At $8,050 and $8,700 respectively, the question isn't which is better — it's which better fits your collection and investment goals.
Price Comparison
Omega
Seamaster Planet Ocean 600M GMT
Omega
Speedmaster '57
At retail, the Omega Seamaster Planet Ocean 600M GMT is listed at $8,050 while the Omega Speedmaster '57 comes in at $8,700. The Omega Seamaster Planet Ocean 600M GMT saves you $650 (8% less), a meaningful difference for most buyers. On the secondary market, the gap widens: the Omega Seamaster Planet Ocean 600M GMT trades around $6,440 and the Omega Speedmaster '57 around $7,395, a difference of $955 favoring the Omega Seamaster Planet Ocean 600M GMT. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Omega Speedmaster '57 commands an even stronger market premium of -15.0%, 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 Seamaster Planet Ocean 600M GMT | Omega Speedmaster '57 |
|---|---|---|
| Case Diameter | 43.5mm | 40.5mm |
| Case Thickness | 14.71mm | 12.99mm |
| Case Material | Stainless steel | Stainless steel |
| Bezel | Black ceramic bidirectional rotating bezel with 24-hour scale | Stainless steel bezel with tachymetre scale |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal front and caseback |
| Water Resistance | 600m / 2000ft | 50m / 167ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8906 | Omega Co-Axial Master Chronometer calibre 9906 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 60 hours |
| Bracelet/Strap | Stainless steel bracelet | Brown leather strap |
| Clasp | Folding clasp with diver extension | Steel buckle |
| Lug Width | 21mm | 21mm |
Key specification differences stand out between these two: The Omega Seamaster Planet Ocean 600M GMT leads in water resistance (600m / 2000ft vs. 50m / 167ft), and the Omega Speedmaster '57 offers longer power reserve at 60 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 GMT costs $148 versus $183 for the Omega Speedmaster '57. For water resistance, the Omega Seamaster Planet Ocean 600M GMT delivers better value per meter of depth rating. The Omega Seamaster Planet Ocean 600M GMT offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Planet Ocean 600M GMT if you value a lower entry price. Go with the Omega Speedmaster '57 if you prioritize better value retention, timing functionality.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Planet Ocean 600M GMT or the Omega Speedmaster '57?
The Omega Seamaster Planet Ocean 600M GMT is more accessible, priced at $8,050 compared to $8,700.
Which holds its value better on the secondary market?
The Omega Speedmaster '57 currently trades at 15.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster Planet Ocean 600M GMT and Omega Speedmaster '57 compare in size?
The Omega Seamaster Planet Ocean 600M GMT measures 43.5mm in diameter and 14.71mm thick, while the Omega Speedmaster '57 is 40.5mm by 12.99mm. Water resistance differs too: 600m / 2000ft versus 50m / 167ft.
What movements do these watches use?
The Omega Seamaster Planet Ocean 600M GMT uses the Omega Co-Axial Master Chronometer calibre 8906 with 55 hours power reserve, while the Omega Speedmaster '57 runs on the Omega Co-Axial Master Chronometer calibre 9906 offering 60 hours of power reserve.
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