Head-to-Head Comparison

Updated September 5, 2026

Omega Speedmaster Professional vs Casio MRW-230H

Omega's chronograph meets Casio's timepiece

Quick Verdict

The Casio MRW-230H (Under $50) delivers Casio Quartz (Battery) technology in the tier below the Omega Speedmaster Professional ($5,000–$10,000). The MRW-230H measures 44.6mm (47.9 x 44.6 x 12.3mm) and is rated 100m (10 ATM). The Speedmaster Professional justifies its premium with Swiss Made heritage and Manual-Winding Caliber 3861. Both represent excellent choices in the luxury watch category.

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Omega

Speedmaster Professional

$5,000–$10,000

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Casio

MRW-230H

Under $50

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Specifications Compared

Feature	Omega Speedmaster Professional	Casio MRW-230H
Price	$5,000–$10,000	Under $50
Case Size	42mm	44.6mm (47.9 x 44.6 x 12.3mm)
Movement	Manual-Winding Caliber 3861	Quartz
Caliber Type	In-House Manual-Winding Manufacture (Co-Axial)	Casio Quartz (Battery)
Power Reserve	50 Hours	Approx. 3-year battery (SR626SW)
Water Resistance	50m (5 ATM)	100m (10 ATM)
Crystal	Hesalite or Sapphire	Resin Glass
Case Material	Stainless Steel	Resin case, aluminum bezel ring
Origin	Swiss Made	Casio (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Omega's design language vs Casio's approach

The Omega Speedmaster Professional features a Stainless Steel case at 42mm with Hesalite or Sapphire 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.

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Movement & Performance

Edge: Casio

Manual-Winding Caliber 3861 vs Quartz

The Speedmaster Professional runs the Manual-Winding Caliber 3861 (In-House Manual-Winding Manufacture (Co-Axial), 50 Hours power reserve) at 21,600 vph (3 Hz) 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.

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Wearability & Fit

Edge: Omega

42mm vs 44.6mm (47.9 x 44.6 x 12.3mm) — different wrist presence

At 42mm, the Speedmaster Professional 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: 50m (5 ATM) vs 100m (10 ATM).

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Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Omega Speedmaster Professional sits at $5,000–$10,000 and the Casio MRW-230H at Under $50. On the specs that outlast any price: the Speedmaster Professional uses Hesalite or Sapphire with 50 Hours, against Resin Glass and Approx. 3-year battery (SR626SW) on the MRW-230H. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

50m (5 ATM) vs 100m (10 ATM)

The Speedmaster Professional is rated to 50m (5 ATM) while the MRW-230H handles 100m (10 ATM). The MRW-230H offers superior water resistance.

Our Verdict

Omega

Speedmaster Professional

Choose the Omega Speedmaster Professional if you prioritize In-House Manual-Winding Manufacture (Co-Axial) engineering, Swiss Made craftsmanship, and 50m (5 ATM) water resistance. At $5,000–$10,000, it delivers Manual-Winding Caliber 3861 with 50 Hours power reserve.

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Casio

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.

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The Bottom Line

The Omega Speedmaster Professional and Casio MRW-230H represent two distinct approaches to fine watchmaking — the Omega bringing Swiss Made tradition while Casio delivers Casio (Japan) engineering.

Frequently Asked Questions

The Omega Speedmaster Professional is the better buy if you want a mechanical movement; the Casio MRW-230H is the better buy if you want quartz accuracy with no servicing. For water, the Casio MRW-230H is rated 100 m against 50 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Casio MRW-230H sits a band lower (Under $50 against $5,000–$10,000), so it is the cheaper way into the category. 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.

The Casio MRW-230H offers better upfront value, sitting a tier lower at Under $50. However, the Omega Speedmaster Professional may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Speedmaster Professional at 42mm with 50m (5 ATM) water resistance handles everyday situations. The MRW-230H at 44.6mm (47.9 x 44.6 x 12.3mm) with 100m (10 ATM) is similarly capable. The Speedmaster Professional uses Hesalite or Sapphire while the MRW-230H uses Resin Glass.

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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.