Updated
Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) vs Casio MRW-230H
Breguet's dress watch meets Casio's timepiece
Quick Verdict
The Casio MRW-230H (Under $50) delivers Casio Quartz (Battery) technology in the tier below the Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) ($25,000+). The MRW-230H measures 44.6mm (47.9 x 44.6 x 12.3mm) 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.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) | Casio MRW-230H |
|---|---|---|
| Price | $25,000+ | Under $50 |
| Case Size | 39mm | 44.6mm (47.9 x 44.6 x 12.3mm) |
| Movement | Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) | Quartz |
| Caliber Type | Breguet 502.3 QSE1, automatic, silicon escapement | Casio Quartz (Battery) |
| Power Reserve | About 45 hours, with indicator | Approx. 3-year battery (SR626SW) |
| Water Resistance | 30m (3 ATM) | 100m (10 ATM) |
| Crystal | Sapphire Crystal, sapphire caseback | Resin Glass |
| Case Material | 18k yellow gold, fluted caseband | Resin case, aluminum bezel ring |
| Origin | Swiss Made | Casio (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Breguet's design language vs Casio'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 Casio MRW-230H offers Resin case, aluminum bezel ring construction at 44.6mm (47.9 x 44.6 x 12.3mm) with Resin Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, Breguet Calibre 502.3 QSE1 (ultra-thin, off-centre rotor) vs Quartz
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 MRW-230H uses the Quartz (Casio Quartz (Battery), Approx. 3-year battery (SR626SW) reserve) at standard. The MRW-230H offers a longer power reserve.
Wearability & Fit
39mm vs 44.6mm (47.9 x 44.6 x 12.3mm) — different wrist presence
At 39mm, the Classique 7137 Power Reserve Moonphase (18k yellow gold) wears more compactly on smaller wrists compared to the MRW-230H at 44.6mm (47.9 x 44.6 x 12.3mm). Water resistance differs: 30m (3 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) sits at $25,000+ and the Casio MRW-230H at Under $50. 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 Resin Glass and Approx. 3-year battery (SR626SW) on the MRW-230H. 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 MRW-230H handles 100m (10 ATM). The MRW-230H 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 AmazonCasio
MRW-230H
Choose the Casio MRW-230H if you value Casio Quartz (Battery) technology, Casio (Japan) heritage, and 44.6mm (47.9 x 44.6 x 12.3mm) proportions. At Under $50, the Quartz with Approx. 3-year battery (SR626SW) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold) and Casio MRW-230H represent two distinct approaches to fine watchmaking — the Breguet bringing Swiss Made tradition while Casio delivers Casio (Japan) engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold)
Tag Heuer's chronograph meets Breguet's dress watch
Tag Heuer Carrera Chronograph vs Casio MRW-230H
Tag Heuer's chronograph meets Casio's timepiece
Tissot PRX Powermatic 80 vs Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold)
Tissot's timepiece meets Breguet's dress watch
Explore These Watches
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.