Omega Seamaster Diver 300M
Ref. 210.30.42.20.10.001
Omega Speedmaster Dark Side of the Moon
Ref. 310.92.44.51.01.003
Omega Seamaster Diver 300M vs Omega Speedmaster Dark Side of the Moon
Ref. 210.30.42.20.10.001 vs Ref. 310.92.44.51.01.003
Comparing the Omega Seamaster Diver 300M to the Omega Speedmaster Dark Side of the Moon means weighing a significant price difference — is the premium justified? At $5,700 versus $13,200, 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
Seamaster Diver 300M
Omega
Speedmaster Dark Side of the Moon
At retail, the Omega Seamaster Diver 300M is listed at $5,700 while the Omega Speedmaster Dark Side of the Moon comes in at $13,200. The Omega Seamaster Diver 300M comes in at $7,500 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap narrows: the Omega Seamaster Diver 300M trades around $4,560 and the Omega Speedmaster Dark Side of the Moon around $11,220, a difference of $6,660 favoring the Omega Seamaster Diver 300M. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Omega Speedmaster Dark Side of the Moon 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 Diver 300M | Omega Speedmaster Dark Side of the Moon |
|---|---|---|
| Case Diameter | 42mm | 44.25mm |
| Case Thickness | 13.56mm | 13.78mm |
| Case Material | Stainless steel | Black ceramic (ZrO2) |
| Bezel | Green ceramic unidirectional rotating bezel with diving scale | Black ceramic bezel ring with tachymetre scale |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal front and caseback |
| Water Resistance | 300m / 1000ft | 50m / 167ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8800 | Omega Co-Axial Master Chronometer calibre 3861 |
| Movement Type | Automatic | Manual-winding |
| Power Reserve | 55 hours | 50 hours |
| Bracelet/Strap | Stainless steel bracelet | Black coated nylon fabric strap |
| Clasp | Folding clasp with diver extension | Ceramic buckle |
| Lug Width | 20mm | 21mm |
Key specification differences stand out between these two: The Omega Seamaster Diver 300M leads in water resistance (300m / 1000ft vs. 50m / 167ft), and the Omega Seamaster Diver 300M offers longer power reserve at 55 hours, and the Omega Seamaster Diver 300M uses Stainless steel while the Omega Speedmaster Dark Side of the Moon opts for Black ceramic (ZrO2). 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 Diver 300M costs $109 versus $254 for the Omega Speedmaster Dark Side of the Moon. For water resistance, the Omega Seamaster Diver 300M delivers better value per meter of depth rating. The Omega Seamaster Diver 300M offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Diver 300M if you value a lower entry price, serious diving capabilities. Go with the Omega Speedmaster Dark Side of the Moon if you prioritize better value retention, timing functionality.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Diver 300M or the Omega Speedmaster Dark Side of the Moon?
The Omega Seamaster Diver 300M is more accessible, priced at $5,700 compared to $13,200.
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 Seamaster Diver 300M and Omega Speedmaster Dark Side of the Moon compare in size?
The Omega Seamaster Diver 300M measures 42mm in diameter and 13.56mm thick, while the Omega Speedmaster Dark Side of the Moon is 44.25mm by 13.78mm. Water resistance differs too: 300m / 1000ft versus 50m / 167ft.
What movements do these watches use?
The Omega Seamaster Diver 300M uses the Omega Co-Axial Master Chronometer calibre 8800 with 55 hours power reserve, while the Omega Speedmaster Dark Side of the Moon runs on the Omega Co-Axial Master Chronometer calibre 3861 offering 50 hours of power reserve.
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