Rolex Datejust 31 vs Tudor Pelagos FXD
Ref. M278274-0018 vs Ref. M25707B-0001
The Rolex Datejust 31 and Tudor Pelagos FXD represent one of the most compelling matchups in luxury watches — a sibling rivalry between two brands under the same parent company. With the Rolex Datejust 31 priced at $10,750 and the Tudor Pelagos FXD at $4,100, the price gap raises a critical question: does the extra investment in the pricier option deliver proportional value? We break down the specs, market performance, and flip potential to help you decide.
Price Comparison
Rolex
Datejust 31
Tudor
Pelagos FXD
At retail, the Rolex Datejust 31 is listed at $10,750 while the Tudor Pelagos FXD comes in at $4,100. The Tudor Pelagos FXD comes in at $6,650 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap narrows: the Rolex Datejust 31 trades around $10,000 and the Tudor Pelagos FXD around $3,895, a difference of $6,105 favoring the Tudor Pelagos FXD. Currently holding steady at just 7% below retail, this watch retains most of its value on the secondary market. The Tudor Pelagos FXD commands an even stronger market premium of -5.0%, holding steady. Both watches score equally on flip potential at 3/10, making neither a clear investment winner over the other.
Specifications
| Specification | Rolex Datejust 31 | Tudor Pelagos FXD |
|---|---|---|
| Case Diameter | 31mm | 42mm |
| Case Thickness | 11.3mm | 12.75mm |
| Case Material | Oystersteel and 18ct white gold | Titanium |
| Bezel | 18ct white gold, fluted | Fixed bezel with bidirectional rotating inner ring in blue ceramic |
| Crystal | Sapphire with Cyclops lens | Sapphire crystal |
| Water Resistance | 100m / 330ft | 200m / 660ft |
| Movement | Rolex calibre 2236 | Tudor Calibre MT5602 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 70 hours |
| Bracelet/Strap | Jubilee, five-piece links | Fabric strap with fixed spring bar attachment |
| Clasp | Oysterclasp with Easylink 5mm comfort extension | Buckle with hook and loop fastener |
| Lug Width | 16mm | Integrated fixed spring bars |
Key specification differences stand out between these two: The Tudor Pelagos FXD leads in water resistance (200m / 660ft vs. 100m / 330ft), and the Tudor Pelagos FXD offers longer power reserve at 70 hours, and the Rolex Datejust 31 uses Oystersteel and 18ct white gold while the Tudor Pelagos FXD opts for Titanium. 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 Rolex Datejust 31 costs $323 versus $93 for the Tudor Pelagos FXD. For water resistance, the Tudor Pelagos FXD delivers better value per meter of depth rating. The Tudor Pelagos FXD offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Rolex Datejust 31 if you value the Rolex heritage. Go with the Tudor Pelagos FXD if you prioritize a lower entry price, better value retention, serious diving capabilities.
Frequently Asked Questions
Which is more affordable, the Rolex Datejust 31 or the Tudor Pelagos FXD?
The Tudor Pelagos FXD is more accessible, priced at $4,100 compared to $10,750.
Which holds its value better on the secondary market?
The Tudor Pelagos FXD currently trades at 5.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Rolex Datejust 31 and Tudor Pelagos FXD compare in size?
The Rolex Datejust 31 measures 31mm in diameter and 11.3mm thick, while the Tudor Pelagos FXD is 42mm by 12.75mm. Water resistance differs too: 100m / 330ft versus 200m / 660ft.
What movements do these watches use?
The Rolex Datejust 31 uses the Rolex calibre 2236 with 55 hours power reserve, while the Tudor Pelagos FXD runs on the Tudor Calibre MT5602 offering 70 hours of power reserve.