Head-to-Head Comparison

Updated September 5, 2026

Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) vs Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial)

Blancpain's dress watch meets Rolex's timepiece

Quick Verdict

The Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) ($25,000+) and Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) ($25,000+) are closely matched timepieces at similar price points. The Villeret Quantième Complet 8 Jours (red gold, enamel dial) emphasizes Blancpain 6639A, automatic, silicon balance spring, under-lug correctors engineering while the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) focuses on Swiss Made craftsmanship.

BlancpainVilleret Quantième Complet 8 Jours (red gold, enamel dial)$25,000+ Check price RolexLady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial)$25,000+ Check price

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Blancpain

Villeret Quantième Complet 8 Jours (red gold, enamel dial)

$25,000+

Check Price Full Review

Rolex

Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial)

$25,000+

Check Price Full Review

Specifications Compared

Feature	Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial)	Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial)
Price	$25,000+	$25,000+
Case Size	42mm	26mm
Movement	Automatic, Blancpain Calibre 6639A (three barrels)	Automatic, Rolex calibre 2135, quickset date
Caliber Type	Blancpain 6639A, automatic, silicon balance spring, under-lug correctors	Rolex 2135, chronometer certified
Power Reserve	About 192 hours (eight days)	About 42 hours
Water Resistance	30m (3 ATM)	100m (10 ATM) per Rolex for the Oyster case
Crystal	Sapphire Crystal, sapphire caseback	Sapphire Crystal
Case Material	18k red gold, double-stepped bezel	18k yellow gold, factory diamond bezel and diamond-set lugs
Origin	Swiss Made	Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Blancpain's design language vs Rolex's approach

The Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) features a 18k red gold, double-stepped bezel case at 42mm with Sapphire Crystal, sapphire caseback protection. The Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) offers 18k yellow gold, factory diamond bezel and diamond-set lugs construction at 26mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Blancpain

Automatic, Blancpain Calibre 6639A (three barrels) vs Automatic, Rolex calibre 2135, quickset date

The Villeret Quantième Complet 8 Jours (red gold, enamel dial) runs the Automatic, Blancpain Calibre 6639A (three barrels) (Blancpain 6639A, automatic, silicon balance spring, under-lug correctors, About 192 hours (eight days) power reserve) at standard frequency. The Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) uses the Automatic, Rolex calibre 2135, quickset date (Rolex 2135, chronometer certified, About 42 hours reserve) at standard. The Villeret Quantième Complet 8 Jours (red gold, enamel dial) edges ahead on power reserve.

📏

Wearability & Fit

Edge: Rolex

42mm vs 26mm — different wrist presence

At 42mm, the Villeret Quantième Complet 8 Jours (red gold, enamel dial) has a bolder wrist presence compared to the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) at 26mm. Water resistance differs: 30m (3 ATM) vs 100m (10 ATM) per Rolex for the Oyster case.

💰

Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) sits at $25,000+ and the Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) at $25,000+. On the specs that outlast any price: the Villeret Quantième Complet 8 Jours (red gold, enamel dial) uses Sapphire Crystal, sapphire caseback with About 192 hours (eight days), against Sapphire Crystal and About 42 hours on the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial). Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Rolex

30m (3 ATM) vs 100m (10 ATM) per Rolex for the Oyster case

The Villeret Quantième Complet 8 Jours (red gold, enamel dial) is rated to 30m (3 ATM) while the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) handles 100m (10 ATM) per Rolex for the Oyster case. The Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) offers superior water resistance.

Our Verdict

Blancpain

Villeret Quantième Complet 8 Jours (red gold, enamel dial)

Choose the Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) if you prioritize Blancpain 6639A, automatic, silicon balance spring, under-lug correctors engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $25,000+, it delivers Automatic, Blancpain Calibre 6639A (three barrels) with About 192 hours (eight days) power reserve.

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Rolex

Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial)

Choose the Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) if you value Rolex 2135, chronometer certified technology, Swiss Made heritage, and 26mm proportions. At $25,000+, the Automatic, Rolex calibre 2135, quickset date with About 42 hours power reserve makes it a compelling choice.

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The Bottom Line

The Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) and Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) represent two distinct approaches to fine watchmaking — the Blancpain bringing Swiss Made tradition while Rolex delivers Swiss Made engineering.

Frequently Asked Questions

For water, the Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) is rated 100 m against 30 m, which is the difference between swimming and diving on one side and splashes on the other. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

Both are priced similarly, making this a question of preference rather than value. The Villeret Quantième Complet 8 Jours (red gold, enamel dial) emphasizes Blancpain 6639A, automatic, silicon balance spring, under-lug correctors technology while the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) prioritizes Rolex 2135, chronometer certified precision.

Both are suitable for daily wear. The Villeret Quantième Complet 8 Jours (red gold, enamel dial) at 42mm with 30m (3 ATM) water resistance handles everyday situations. The Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) at 26mm with 100m (10 ATM) per Rolex for the Oyster case is similarly capable. The Villeret Quantième Complet 8 Jours (red gold, enamel dial) uses Sapphire Crystal, sapphire caseback while the Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) uses Sapphire Crystal.

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Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial) — Full Review Rolex Lady-Datejust 26 (18k gold, diamond bezel and lugs, red vignette dial) — Full Review Browse All Guides

How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.