Omega Seamaster Diver 300M vs Tudor Pelagos
Ref. 210.30.42.20.01.001 vs Ref. M25600TN-0001
In the dive watch category, the Omega Seamaster Diver 300M and Tudor Pelagos go head to head — two of the most sought-after options from rival manufacturers. The Omega Seamaster Diver 300M at $5,700 and the Tudor Pelagos at $5,600 each bring unique strengths. Here's our detailed breakdown of how they compare on specs, pricing, and market value.
Price Comparison
Omega
Seamaster Diver 300M
Tudor
Pelagos
At retail, the Omega Seamaster Diver 300M is listed at $5,700 while the Tudor Pelagos comes in at $5,600. The two watches are priced within $100 of each other, making this a near-even matchup in terms of cost. On the secondary market, the gap widens: the Omega Seamaster Diver 300M trades around $4,700 and the Tudor Pelagos around $4,400, a difference of $300 favoring the Tudor Pelagos. Available at 18% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Tudor Pelagos shows a more modest market premium of -21.4%, 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 | Tudor Pelagos |
|---|---|---|
| Case Diameter | 42mm | 42mm |
| Case Thickness | 13.56mm | 14.3mm |
| Case Material | Stainless steel | Titanium |
| Bezel | Black ceramic unidirectional rotating bezel with diving scale | Unidirectional rotating bezel with ceramic insert in black |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire crystal |
| Water Resistance | 300m / 1000ft | 500m / 1640ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8800 | Tudor Calibre MT5612 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 70 hours |
| Bracelet/Strap | Stainless steel bracelet | Titanium with self-adjusting clasp |
| Clasp | Folding clasp with diver extension | Folding clasp with spring-loaded self-adjusting mechanism |
| Lug Width | 20mm | 22mm |
Key specification differences stand out between these two: The Tudor Pelagos leads in water resistance (500m / 1640ft vs. 300m / 1000ft), and the Tudor Pelagos offers longer power reserve at 70 hours, and the Omega Seamaster Diver 300M uses Stainless steel while the Tudor Pelagos opts for Titanium. 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 Diver 300M costs $112 versus $105 for the Tudor Pelagos. For water resistance, the Tudor Pelagos delivers better value per meter of depth rating. The Tudor Pelagos offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Diver 300M if you value better value retention, serious diving capabilities. Go with the Tudor Pelagos if you prioritize a lower entry price, serious diving capabilities.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Diver 300M or the Tudor Pelagos?
The Tudor Pelagos is more accessible, priced at $5,600 compared to $5,700.
Which holds its value better on the secondary market?
The Omega Seamaster Diver 300M currently trades at 17.5% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster Diver 300M and Tudor Pelagos compare in size?
The Omega Seamaster Diver 300M measures 42mm in diameter and 13.56mm thick, while the Tudor Pelagos is 42mm by 14.3mm. Water resistance differs too: 300m / 1000ft versus 500m / 1640ft.
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 Tudor Pelagos runs on the Tudor Calibre MT5612 offering 70 hours of power reserve.

