Updated
Casio MRW-230H vs Omega Constellation Co-Axial 38mm (18k red gold)
Two timepieces compared — Under $50 vs $25,000+
Quick Verdict
The Casio MRW-230H (Under $50) offers Casio Quartz (Battery) precision in the tier below the Omega Constellation Co-Axial 38mm (18k red gold) ($25,000+). The MRW-230H measures 44.6mm (47.9 x 44.6 x 12.3mm) and is rated 100m (10 ATM). The Constellation Co-Axial 38mm (18k red gold) counters with Swiss Made craftsmanship and 100m (10 ATM) water resistance. Both are exceptional timepieces for their respective tiers.
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Specifications Compared
| Feature | Casio MRW-230H | Omega Constellation Co-Axial 38mm (18k red gold) |
|---|---|---|
| Price | Under $50 | $25,000+ |
| Case Size | 44.6mm (47.9 x 44.6 x 12.3mm) | 38mm |
| Movement | Quartz | Automatic, Omega Co-Axial Calibre 8501 |
| Caliber Type | Casio Quartz (Battery) | Omega 8501, Co-Axial escapement, silicon balance spring, chronometer-certified |
| Power Reserve | Approx. 3-year battery (SR626SW) | 60 hours |
| Water Resistance | 100m (10 ATM) | 100m (10 ATM) |
| Crystal | Resin Glass | Sapphire Crystal, sapphire exhibition caseback |
| Case Material | Resin case, aluminum bezel ring | 18k red gold |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Omega's approach
The Casio MRW-230H features a Resin case, aluminum bezel ring case at 44.6mm (47.9 x 44.6 x 12.3mm) with Resin Glass protection. The Omega Constellation Co-Axial 38mm (18k red gold) offers 18k red gold construction at 38mm with Sapphire Crystal, sapphire exhibition caseback. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz vs Automatic, Omega Co-Axial Calibre 8501
The MRW-230H runs the Quartz (Casio Quartz (Battery), Approx. 3-year battery (SR626SW) power reserve) at standard frequency. The Constellation Co-Axial 38mm (18k red gold) uses the Automatic, Omega Co-Axial Calibre 8501 (Omega 8501, Co-Axial escapement, silicon balance spring, chronometer-certified, 60 hours reserve) at standard. The Constellation Co-Axial 38mm (18k red gold) offers a longer power reserve.
Wearability & Fit
44.6mm (47.9 x 44.6 x 12.3mm) vs 38mm — different wrist presence
At 44.6mm (47.9 x 44.6 x 12.3mm), the MRW-230H has a bolder wrist presence compared to the Constellation Co-Axial 38mm (18k red gold) at 38mm. Water resistance differs: 100m (10 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio MRW-230H sits at Under $50 and the Omega Constellation Co-Axial 38mm (18k red gold) at $25,000+. On the specs that outlast any price: the MRW-230H uses Resin Glass with Approx. 3-year battery (SR626SW), against Sapphire Crystal, sapphire exhibition caseback and 60 hours on the Constellation Co-Axial 38mm (18k red gold). Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 100m (10 ATM)
The MRW-230H is rated to 100m (10 ATM) while the Constellation Co-Axial 38mm (18k red gold) handles 100m (10 ATM). Both offer identical water resistance ratings.
Our Verdict
Casio
MRW-230H
Choose the Casio MRW-230H if you prioritize Casio Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At Under $50, it delivers Quartz with Approx. 3-year battery (SR626SW) power reserve.
Check Price on AmazonOmega
Constellation Co-Axial 38mm (18k red gold)
Choose the Omega Constellation Co-Axial 38mm (18k red gold) if you value Omega 8501, Co-Axial escapement, silicon balance spring, chronometer-certified technology, Swiss Made heritage, and 38mm proportions. At $25,000+, the Automatic, Omega Co-Axial Calibre 8501 with 60 hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio MRW-230H and Omega Constellation Co-Axial 38mm (18k red gold) represent two distinct approaches to the timepiece category — the Casio bringing Casio (Japan) tradition while Omega 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.