Head-to-Head Comparison

Updated September 5, 2026

Casio MRW-230H vs Invicta Pro Diver Automatic 23681

Casio's timepiece meets Invicta's diver

Quick Verdict

The Casio MRW-230H (Under $50) and Invicta Pro Diver Automatic 23681 ($50–$100) are closely matched timepieces at similar price points. The MRW-230H emphasizes Casio Quartz (Battery) engineering while the Pro Diver Automatic 23681 focuses on Invicta (Japanese movement) craftsmanship.

CasioMRW-230HUnder $50 Check price InvictaPro Diver Automatic 23681$50–$100 Check price

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Casio

MRW-230H

Under $50

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Invicta

Pro Diver Automatic 23681

$50–$100

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Specifications Compared

Feature	Casio MRW-230H	Invicta Pro Diver Automatic 23681
Price	Under $50	$50–$100
Case Size	44.6mm (47.9 x 44.6 x 12.3mm)	40mm
Movement	Quartz	Automatic NH35A
Caliber Type	Casio Quartz (Battery)	Automatic (Seiko NH35A)
Power Reserve	Approx. 3-year battery (SR626SW)	—
Water Resistance	100m (10 ATM)	200m
Crystal	Resin Glass	Mineral Glass
Case Material	Resin case, aluminum bezel ring	—
Origin	Casio (Japan)	Invicta (Japanese movement)

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Invicta'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 Invicta Pro Diver Automatic 23681 offers steel construction at 40mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Draw

Quartz vs Automatic NH35A

The MRW-230H runs the Quartz (Casio Quartz (Battery), Approx. 3-year battery (SR626SW) power reserve) at standard frequency. The Pro Diver Automatic 23681 uses the Automatic NH35A (Automatic (Seiko NH35A), standard reserve) at standard. Power reserves are closely matched.

📏

Wearability & Fit

Edge: Invicta

44.6mm (47.9 x 44.6 x 12.3mm) vs 40mm — 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 Pro Diver Automatic 23681 at 40mm. Water resistance differs: 100m (10 ATM) vs 200m.

💰

Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Casio MRW-230H sits at Under $50 and the Invicta Pro Diver Automatic 23681 at $50–$100. On the specs that outlast any price: the MRW-230H uses Resin Glass with Approx. 3-year battery (SR626SW), against Mineral Glass and a standard reserve on the Pro Diver Automatic 23681. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Invicta

100m (10 ATM) vs 200m

The MRW-230H is rated to 100m (10 ATM) while the Pro Diver Automatic 23681 handles 200m. The Pro Diver Automatic 23681 offers superior water resistance.

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.

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Invicta

Pro Diver Automatic 23681

Choose the Invicta Pro Diver Automatic 23681 if you value Automatic (Seiko NH35A) technology, Invicta (Japanese movement) heritage, and 40mm proportions. At $50–$100, the Automatic NH35A with ample power reserve makes it a compelling choice.

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The Bottom Line

The Casio MRW-230H and Invicta Pro Diver Automatic 23681 represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Invicta delivers Invicta (Japanese movement) engineering.

Frequently Asked Questions

The Invicta Pro Diver Automatic 23681 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 Invicta Pro Diver Automatic 23681 is rated 200 m against 100 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 MRW-230H emphasizes Casio Quartz (Battery) technology while the Pro Diver Automatic 23681 prioritizes Automatic (Seiko NH35A) precision.

Both are suitable for daily wear. The MRW-230H at 44.6mm (47.9 x 44.6 x 12.3mm) with 100m (10 ATM) water resistance handles everyday situations. The Pro Diver Automatic 23681 at 40mm with 200m is similarly capable. The MRW-230H uses Resin Glass while the Pro Diver Automatic 23681 uses Mineral 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.