The Cartier Santos de Cartier Small two-tone, reference W2SA0033, is a compact quartz watch with a 27 × 34.5 mm case, a steel-and-18K yellow-gold bracelet, and a supplied dark blue calfskin strap. Cartier lists hours and minutes, a 7.08 mm thickness, and 3-bar water resistance. It is distinct from the larger, automatic medium two-tone Santos, W2SA0016.
This is a specification-based review of Cartier’s product information, not a hands-on assessment of wearing comfort, timekeeping, or construction.
What is the Cartier Santos Small two-tone?
W2SA0033 is Cartier’s small Santos de Cartier in a two-tone configuration. The reference matters: Cartier’s medium two-tone Santos is a different watch, with a larger case, an automatic movement, and a different water-resistance rating. The specifications below are Cartier-listed details for the small W2SA0033, not independent measurements.
Cartier Santos Small W2SA0033 specifications
| Specification | Cartier-listed detail |
|---|---|
| Reference | W2SA0033 |
| Case dimensions | 27 × 34.5 mm; 7.08 mm thick |
| Movement | Quartz |
| Functions | Hours and minutes |
| Case and bracelet | 18K yellow gold and steel |
| Dial | Silver sunray |
| Hands | Blued-steel, sword-shaped |
| Crown | Seven-sided, set with a synthetic faceted blue spinel |
| Crystal | Sapphire |
| Additional strap | Dark blue calfskin with a steel ardillon buckle |
| Water resistance | 3 bar, approximately 30 metres / 100 feet |
All specifications in this table come from Cartier’s W2SA0033 product listing. The listed water-resistance figure is the manufacturer’s rating, not an independent test report or a recommendation for a particular water activity.
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Is the small two-tone Santos automatic or quartz?
It is quartz. Cartier lists the W2SA0033 movement as quartz and its functions as hours and minutes. It should not be described as automatic: that specification belongs to the medium two-tone Santos, reference W2SA0016.
How does the small model differ from the medium two-tone Santos?
These references are easy to confuse, but they differ in size, movement, water-resistance rating, and strap package. Cartier lists the following specifications for each:
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| Feature | Small W2SA0033 | Medium W2SA0016 |
|---|---|---|
| Movement | Quartz | Automatic caliber 1847 MC |
| Case size | 27 × 34.5 mm | 35.1 mm case width |
| Thickness | 7.08 mm | 8.83 mm |
| Water-resistance rating | 3 bar | 10 bar |
| Bracelet and additional strap | Two-tone bracelet and dark blue calfskin strap | Steel bracelet and calfskin strap |
The medium-model details are from Cartier’s W2SA0016 product listing; they do not describe the small W2SA0033. Cartier’s listing gives a case width for the medium model, not the same two-dimensional case measurement provided for the small.
Bracelet, supplied strap, and fit
The small two-tone is listed with an 18K yellow-gold-and-steel bracelet and an additional dark blue calfskin strap with a steel ardillon buckle. Cartier describes an interchangeability system for the watch. The product information does not establish compatibility for third-party straps, so confirm the interface and fit before buying an alternative.
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The 27 × 34.5 mm dimensions and 7.08 mm thickness describe the case, but they cannot predict how the watch will sit on a particular wrist. Try it on if possible to judge its proportions and how the bracelet or strap feels. Cartier’s published specifications also do not establish comfort, clasp operation, legibility in different lighting, scratch resistance, accuracy, or battery life.
Design and the Santos story
Cartier specifies a silver sunray dial, blued-steel sword-shaped hands, and a seven-sided crown set with a synthetic faceted blue spinel. The case and bracelet combine steel with 18K yellow gold; sapphire crystal covers the dial. These are product-page descriptions rather than observations from an in-person inspection.
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Cartier’s collection history says that in 1904 Louis Cartier granted Brazilian aviator Alberto Santos Dumont’s wish to tell time while flying, and describes their friendship as part of the story behind one of the first wristwatches. That is Cartier’s account of the watch’s origin, presented on its Santos de Cartier history page.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Availability of W2SA0033
A Cartier storefront for Belgium reported “Currently unavailable online” and offered an availability notification. That is a local, time-sensitive online status; it does not establish that the W2SA0033 is discontinued or unavailable in other regions. Check Cartier’s product page or a local Cartier boutique for current regional availability, and confirm the reference and configuration before purchasing.
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