Rolex Day-Date 36 vs Tudor Black Bay S&G
Ref. M128395TBR-0032 vs Ref. M79733N-0007
The Rolex Day-Date 36 and Tudor Black Bay S&G represent one of the most compelling matchups in luxury watches — a sibling rivalry between two brands under the same parent company. With the Rolex Day-Date 36 priced at $72,800 and the Tudor Black Bay S&G at $5,475, 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
Day-Date 36
Tudor
Black Bay S&G
At retail, the Rolex Day-Date 36 is listed at $72,800 while the Tudor Black Bay S&G comes in at $5,475. The Tudor Black Bay S&G comes in at $67,325 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap widens: the Rolex Day-Date 36 trades around $76,440 and the Tudor Black Bay S&G around $4,928, a difference of $71,512 favoring the Tudor Black Bay S&G. Trading at 5% above retail and holding steady, this model holds its value well on the pre-owned market. The Tudor Black Bay S&G shows a more modest market premium of -10.0%, holding steady. For investors, the Rolex Day-Date 36 edges ahead with a flip potential score of 5/10 compared to 2/10.
Specifications
| Specification | Rolex Day-Date 36 | Tudor Black Bay S&G |
|---|---|---|
| Case Diameter | 36mm | 41mm |
| Case Thickness | 12.1mm | 12.7mm |
| Case Material | 18ct Everose gold | Stainless steel and yellow gold |
| Bezel | 18ct Everose gold, set with diamonds and sapphires | Unidirectional rotating bezel with anodized aluminium insert in black |
| Crystal | Sapphire with Cyclops lens | Domed sapphire crystal |
| Water Resistance | 100m / 330ft | 200m / 660ft |
| Movement | Rolex calibre 3255 | Tudor Calibre MT5612 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 70 hours | 70 hours |
| Bracelet/Strap | President, three-piece semi-circular links | Stainless steel and yellow gold with riveted-style links |
| Clasp | Concealed folding Crownclasp | Folding clasp with safety catch |
| Lug Width | 20mm | 22mm |
Key specification differences stand out between these two: The Tudor Black Bay S&G leads in water resistance (200m / 660ft vs. 100m / 330ft), and the Rolex Day-Date 36 uses 18ct Everose gold while the Tudor Black Bay S&G opts for Stainless steel and yellow gold. 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 Rolex Day-Date 36 costs $2,123 versus $120 for the Tudor Black Bay S&G. For water resistance, the Tudor Black Bay S&G delivers better value per meter of depth rating. The Tudor Black Bay S&G offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Rolex Day-Date 36 if you value stronger flip potential, better value retention. Go with the Tudor Black Bay S&G if you prioritize a lower entry price, serious diving capabilities. For pure investment potential, the Rolex Day-Date 36 has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Rolex Day-Date 36 or the Tudor Black Bay S&G?
The Tudor Black Bay S&G is more accessible, priced at $5,475 compared to $72,800.
Which watch is a better investment?
Based on current market data, the Rolex Day-Date 36 has a higher flip potential score of 5/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex Day-Date 36 currently trades at 5.0% above retail, indicating strong value retention on the pre-owned market.
How do the Rolex Day-Date 36 and Tudor Black Bay S&G compare in size?
The Rolex Day-Date 36 measures 36mm in diameter and 12.1mm thick, while the Tudor Black Bay S&G is 41mm by 12.7mm. Water resistance differs too: 100m / 330ft versus 200m / 660ft.
What movements do these watches use?
The Rolex Day-Date 36 uses the Rolex calibre 3255 with 70 hours power reserve, while the Tudor Black Bay S&G runs on the Tudor Calibre MT5612 offering 70 hours of power reserve.