Rolex Datejust vs Santos de Cartier
Rolex Datejust 126334-0001 vs Cartier Santos de Cartier WSSA0018, compared on the specs each brand publishes.
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The short answer
A round classic against a square one, compared on published specs.
- Case size: the Rolex Datejust 126334-0001 is 1.2 mm larger (41 mm vs 39.8 mm).
- Price: the Cartier Santos de Cartier WSSA0018 lists for $2,450 less in the US ($9,200 vs $11,650).
- Calibre: Rolex Datejust 126334-0001 has 3235; Cartier Santos de Cartier WSSA0018 has 1847 Mc.
- Certification: only the Rolex Datejust 126334-0001 is listed as a COSC chronometer (Rolex Superlative Chronometer).
- Case material: Rolex Datejust 126334-0001 has Steel and gold; Cartier Santos de Cartier WSSA0018 has Stainless steel.
Side-by-side specs
| Spec | Rolex Datejust 126334-0001 | Cartier Santos de Cartier WSSA0018 |
|---|---|---|
| Case diameter | 41 mm | 39.8 mm |
| Thickness | Not published by Rolex | 9.38 mm |
| Calibre | 3235 | 1847 Mc |
| Movement | Automatic | Automatic |
| Power reserve | 70 h | Not published by Cartier |
| Water resistance | 100 m | 100 m |
| Crystal | Sapphire | Sapphire |
| Case material | Steel and gold | Stainless steel |
| Ships on | Bracelet | Bracelet |
| US list price | $11,650 (US list) | $9,200 (US list) |
| Dial | Bright blue | Silvered opaline |
| Certification | COSC chronometer (Rolex Superlative Chronometer) | Not stated |
| Status | In production | In production |
| Suits wrists of about our sizing guide | 16.4–18.3 cm | 15.9–17.8 cm |
Specs summarised in our own words from the brand's product pages: 126334-0001 source (checked 3 Nov 2026) WSSA0018 source (checked 3 Nov 2026). "Not published" means the brand page we checked doesn't list it, so we leave it blank rather than guess.
All the differences
- Case size: the Rolex Datejust 126334-0001 is 1.2 mm larger (41 mm vs 39.8 mm).
- Price: the Cartier Santos de Cartier WSSA0018 lists for $2,450 less in the US ($9,200 vs $11,650).
- Calibre: Rolex Datejust 126334-0001 has 3235; Cartier Santos de Cartier WSSA0018 has 1847 Mc.
- Certification: only the Rolex Datejust 126334-0001 is listed as a COSC chronometer (Rolex Superlative Chronometer).
- Case material: Rolex Datejust 126334-0001 has Steel and gold; Cartier Santos de Cartier WSSA0018 has Stainless steel.
- Features: only the Rolex Datejust 126334-0001 has a date.
Wrist fit
Lug-to-lug decides overhang more than diameter does. Enter your wrist to see how each one should wear.
- Rolex Datejust 126334-0001 –
- Cartier Santos de Cartier WSSA0018 –
Same rule of thumb as Watch Finder: case diameter of about 23.5% of your wrist circumference (−2 mm to +2.5 mm), and lug-to-lug no longer than about 29% of it plus 1 mm. A guide, not a rule; flat or round wrists differ.
Which should you buy?
It is the more compact case on paper (39.8 mm across). Our sizing guide puts it at about 15.9–17.8 cm.
It has the lower US list price, $9,200, a $2,450 difference.
Prices and where to buy
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More: All Rolex Datejust references · All Cartier Santos de Cartier references.
Questions
Which is bigger, the Rolex Datejust 126334-0001 or the Cartier Santos de Cartier WSSA0018?
Per the brands, the Rolex Datejust 126334-0001 is 41 mm across and the Cartier Santos de Cartier WSSA0018 is 39.8 mm.
Which is cheaper?
The Cartier Santos de Cartier WSSA0018, at a US list price of $9,200 vs $11,650 when we checked.
Which is more water-resistant?
Rolex Datejust 126334-0001: 100 m. Cartier Santos de Cartier WSSA0018: 100 m.
Have you tested these watches?
No. This comparison uses brand-published specs and our own analysis of them, not hands-on testing.
Watch.co is independent and not affiliated with any brand. We haven't handled these watches for this page: everything here comes from brand-published specs and our own analysis. Brand names are used only to identify products.