
Cartier
Ronde Solo de Cartier
Ref. W6700255
New Price
$3k–$4k
Pre-owned: $3k–$4k
Comparing the Cartier Ronde Solo de Cartier ($3k–$4k, 30m WR, 36mm) against the Rolex Datejust 36 ($7k–$8k, 100m WR, 36mm) — specs, movement, community votes, and an expert verdict below. The Cartier Ronde Solo de Cartier is the more affordable option by $3k.
Our Verdict
Too Close to Call
Both the Cartier Ronde Solo de Cartier and Rolex Datejust 36 are excellent choices — the winner depends on your priorities, budget, and style preference.
Complete head-to-head comparison

Cartier
Ref. W6700255
New Price
$3k–$4k
Pre-owned: $3k–$4k

Rolex
Ref. 126200
New Price
$7k–$8k
Pre-owned: $7k–$10k
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All Cartier watches, comparisons, and guides in one place
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All Rolex watches, comparisons, and guides in one place
Visit Rolex Pillar Page →Cartier Ronde Solo de Cartier is the value winner at $3k–$4k — over 50% cheaper than the Rolex Datejust 36 ($7k–$8k). Rolex Datejust 36 offers automatic craftsmanship; Cartier Ronde Solo de Cartier runs quartz for higher accuracy and lower maintenance. Rolex Datejust 36 edges ahead on water resistance: 100m vs 30m.
Pros
Cons
Pros
Both are excellent watches with different strengths. The Cartier Ronde Solo de Cartier offers comparable sizing and costs less new. The Rolex Datejust 36 excels in water resistance. The best choice depends on your wrist size, budget, and preferred aesthetic.
The Cartier Ronde Solo de Cartier retails for $3k–$4k, while the Rolex Datejust 36 is priced at $7k–$8k. Pre-owned, expect $3k–$4k and $7k–$10k respectively. Actual secondary market prices vary based on condition and demand.
The Cartier Ronde Solo de Cartier has a 36mm case diameter with 7.3mm thickness, while the Rolex Datejust 36 measures 36mm × 11.9mm. Both have lug-to-lug measurements of 41mm and 44mm respectively. Consider your wrist size and wear style when deciding.
The Cartier Ronde Solo de Cartier is water-resistant to 30m, while the Rolex Datejust 36 offers 100m. Both are suitable for swimming and snorkeling at their respective depths. For professional diving, verify the rating exceeds 300m and includes a screw-down crown.
The Cartier Ronde Solo de Cartier uses a quartz Cal. 157 with quartz power reserve. The Rolex Datejust 36 features a automatic Cal. 3235 with 70 hours power reserve. Check movement specifications for specific features like chronograph or GMT functionality.
Cartier and Rolex both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $3k–$4k for the Ronde Solo de Cartier and $7k–$10k for the Datejust 36. Condition, service history, and box/papers significantly impact resale value for both models.
The only watch worn on the Moon. The Speedmaster was NASA-qualified in 1965 and accompanied every Apollo mission.
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Rolex's sister brand, delivering in-house movements at 30–60% lower retail prices than its parent.
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Motorsport's official timekeeper for over 50 years — TAG Heuer has timed Formula 1, Le Mans, and the Monaco Grand Prix.
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Invented the quartz movement (1969), the kinetic movement (1988), and the spring drive (1999) — more watch innovations than any other single company.
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