Cartier Santos WSSA0018
Specs, Market Price & Buying Guide
- The Cartier Santos de Cartier WSSA0018 is the large-model steel Santos: 39.8mm wide, automatic Calibre 1847 MC, 100m water resistance, with tool-free QuickSwitch strap changes and SmartLink bracelet sizing — bracelet and leather strap both in the box.
- Market range: roughly $6,000–$7,500 pre-owned, with new pieces trading close to the ≈$8,650 US list (verified 2026-08-23 — recheck before acting).
- Availability (checked 2026-08-23): in current production and genuinely buyable — no allocation games; boutiques and dealers have stock.
Representative photo of the Santos de Cartier line. Reference family shown for identification.
Market range $6,000–$7,500 pre-owned; near retail new · verified 2026-08-23
≈$8,650 US list (verify — Cartier raises prices annually)
Flat
Flat
Stable — the Santos trades in a narrow, liquid band near retail
Editorial estimate compiled from public listings — ranges move weekly; full sets with both strap options price highest. Verified 2026-08-23.
Checked 2026-08-23: in current production with healthy boutique and gray-market supply — one of the few luxury sports watches you can simply buy.
Full specifications
| Spec | Detail |
|---|---|
| Case | 39.8mm (width) stainless steel, brushed with polished bezel |
| Lug-to-lug | ~47.5mm (editorial measurement — verify) |
| Thickness | 9.38mm |
| Lug width | Proprietary QuickSwitch — no standard lug width |
| Movement | Cartier Calibre 1847 MC, in-house automatic |
| Power reserve | ~42 hours |
| Crystal | Sapphire |
| Water resistance | 100m / 10 bar |
| Bezel | Square steel bezel with 8 exposed screws |
| Bracelet | Steel bracelet with SmartLink tool-free sizing; leather strap included |
| Dial | Silvered opaline, Roman numerals, blued-steel sword hands, date at 6 |
| Introduced | 2018 Santos redesign; in current production |
How it wears, by wrist size
Wearable but assertive — the square case reads larger than 39.8mm. Try the medium (WSSA0029, 35.1mm) if in doubt.
The sweet spot — modern, square, and unmistakable without shouting.
Ideal; the curved case hugs the wrist and the bracelet tapers cleanly.
Comfortable and proportionate — the large model wears true to its footprint.
Buy or skip?
Editorial take: 9/10 — the thinking person's luxury sports watch.
In a market addicted to allocation theater, the WSSA0018 is a luxury sports watch you can walk in and buy — with 100m water resistance, an in-house movement, two straps, and the strongest tool-free strap system in the business. It will not flip for a premium, and that is exactly why it is a sane purchase.
- You want waitlist bragging rights — the Santos is available, and some buyers read that as a flaw
- You want a round watch — obvious, but the square case is the whole point
- You want maximum value retention — it holds value respectably, not spectacularly
Available alternatives (Amazon-priced)
Most readers will not spend $8K on a watch. These square/integrated alternatives deliver the Santos stance at Amazon prices — clearly labeled, no pretense:
Pagani Design Santos-style automatic
Square case, exposed-screw bezel, sapphire — the usual Pagani value formula.
Check Amazon price ↗Cadisen Santos-style automatic
A solid square-case alternative with sapphire and an automatic movement.
Check Amazon price ↗Seiko 5 Sports SRPD series
Not square, but the same 'one watch does everything' brief with real brand heritage.
Check Amazon price ↗WSSA0018 vs. its siblings
| Reference | Case | Movement | Power reserve | What changed |
|---|---|---|---|---|
| WSSA0018 (this watch) | Large, 39.8mm | Cal. 1847 MC auto | ~42h | The full-size modern Santos |
| WSSA0029 | Medium, 35.1mm | Cal. 1847 MC auto | ~42h | Same watch, smaller wrist |
| Santos-Dumont XL (WSSA0032) | Large, slimmer case | Cal. 430 MC manual | ~38h | Dressier, thinner, closer to the 1904 original |
Ownership costs
| Cost item | Detail |
|---|---|
| Service interval | Cartier recommends ~5 years; the 1847 MC is a simple, robust caliber |
| Typical service cost | $500–$800 at Cartier; less at a good independent (estimate — verify locally) |
| Insurance | Optional at this value — a rider makes sense above ~$5K |
| Parts availability | Excellent — current production with a deep parts pipeline; QuickSwitch straps are sold separately |
Frequently asked questions
Is the Cartier WSSA0018 discontinued?
No. As of our last check (2026-08-23) the large steel Santos is in current production and readily available.
What is the lug-to-lug of the Santos WSSA0018?
Approximately 47.5mm by editorial measurement on the 39.8mm-wide case. Verify against manufacturer data if precision matters.
Is the Santos de Cartier a good investment?
It holds value respectably — typically 60–75% of retail pre-owned — but it is not an appreciation play. Buy it to wear it; past performance is not a guarantee, and this is not financial advice.
What is the difference between the WSSA0018 and the WSSA0029?
Size only: the 0018 is the large (39.8mm) and the 0029 is the medium (35.1mm). Same movement, same QuickSwitch/SmartLink systems, same box contents.
Is the Santos really water resistant to 100m?
Yes — the 2018 redesign carries a 100m / 10 bar rating. It is a genuine sports watch, not just a dress watch with screws.
How does the QuickSwitch system work?
A button under each strap end releases it tool-free, and SmartLink lets you add or remove bracelet links with a push — no watchmaker needed for strap or size changes.
Santos or Santos-Dumont?
The Santos de Cartier is the sports watch (automatic, 100m, bracelet). The Santos-Dumont is thinner, dressier, and closer to the 1904 original — manual-wind or quartz, leather strap only.
Where to buy safely
The smart route for this reference — full warranty, both straps, and 8-year Cartier Care extension when registered. No waitlist drama.
Meaningful discounts on new and pre-owned pieces; insist on the full set (both straps, box, papers).
Rarely worth it for a current-production Santos — retail supply is healthy.
Fine with normal precautions — verify the serial, both straps, and the SmartLink extras before money moves.