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Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) vs Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers)
Breguet's dress watch meets Rolex's timepiece
Quick Verdict
The Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) ($10,000–$25,000) delivers Rolex 2235, chronometer certified technology in the tier below the Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) ($25,000+). The Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) measures 31mm and is rated 100m (10 ATM). The Classique 7137 Power Reserve Moonphase (18k yellow gold) justifies its premium with Swiss Made heritage and Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor). Both represent excellent choices in the luxury watch category.
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Rolex
Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers)
$10,000–$25,000
Specifications Compared
| Feature | Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) | Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) |
|---|---|---|
| Price | $25,000+ | $10,000–$25,000 |
| Case Size | 39mm | 31mm |
| Movement | Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) | Automatic, Rolex calibre 2235, quickset date |
| Caliber Type | Breguet 502.3 QSE1, automatic, silicon escapement | Rolex 2235, chronometer certified |
| Power Reserve | About 45 hours, with indicator | About 42 hours |
| Water Resistance | 30m (3 ATM) | 100m (10 ATM) |
| Crystal | Sapphire Crystal, sapphire caseback | Sapphire Crystal, Cyclops |
| Case Material | 18k yellow gold, fluted caseband | Oystersteel with 18k white gold fluted bezel (white Rolesor) |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Breguet's design language vs Rolex's approach
The Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) features a 18k yellow gold, fluted caseband case at 39mm with Sapphire Crystal, sapphire caseback protection. The Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) offers Oystersteel with 18k white gold fluted bezel (white Rolesor) construction at 31mm with Sapphire Crystal, Cyclops. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) vs Automatic, Rolex calibre 2235, quickset date
The Classique 7137 Power Reserve Moonphase (18k yellow gold) runs the Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) (Breguet 502.3 QSE1, automatic, silicon escapement, About 45 hours, with indicator power reserve) at standard frequency. The Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) uses the Automatic, Rolex calibre 2235, quickset date (Rolex 2235, chronometer certified, About 42 hours reserve) at standard. The Classique 7137 Power Reserve Moonphase (18k yellow gold) edges ahead on power reserve.
Wearability & Fit
39mm vs 31mm — different wrist presence
At 39mm, the Classique 7137 Power Reserve Moonphase (18k yellow gold) has a bolder wrist presence compared to the Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) at 31mm. Water resistance differs: 30m (3 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Rolex sits in the lower tier
The Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) sits at $25,000+ and the Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) at $10,000–$25,000. On the specs that outlast any price: the Classique 7137 Power Reserve Moonphase (18k yellow gold) uses Sapphire Crystal, sapphire caseback with About 45 hours, with indicator, against Sapphire Crystal, Cyclops and About 42 hours on the Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers). Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 100m (10 ATM)
The Classique 7137 Power Reserve Moonphase (18k yellow gold) is rated to 30m (3 ATM) while the Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) handles 100m (10 ATM). The Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) offers superior water resistance.
Our Verdict
Breguet
Classique 7137 Power Reserve Moonphase (18k yellow gold)
Choose the Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) if you prioritize Breguet 502.3 QSE1, automatic, silicon escapement engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $25,000+, it delivers Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) with About 45 hours, with indicator power reserve.
Check Price on AmazonRolex
Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers)
Choose the Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) if you value Rolex 2235, chronometer certified technology, Swiss Made heritage, and 31mm proportions. At $10,000–$25,000, the Automatic, Rolex calibre 2235, quickset date with About 42 hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) and Rolex Datejust 31 78274 (steel, white gold fluted bezel, meteorite diamond dial, box and papers) represent two distinct approaches to fine watchmaking — the Breguet bringing Swiss Made tradition while Rolex delivers Swiss Made engineering.
Frequently Asked Questions
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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.