Head-to-Head Comparison

Casio Duro MDV106 vs Frederique Constant Classic Quartz Moonphase

Casio's diver meets Frederique Constant's dress watch

Quick Verdict

The Casio Duro MDV106 ($50–$100) offers Casio Quartz (Battery) precision in the tier below the Frederique Constant Classic Quartz Moonphase ($1,000–$1,500). The Duro MDV106 measures 44mm and is rated 200m (20 ATM) Diver. The Classic Quartz Moonphase counters with Swiss Made craftsmanship and 50m (5 ATM) water resistance. Both are exceptional watches for their respective tiers.

CasioDuro MDV106$50–$100 Check price Frederique ConstantClassic Quartz Moonphase$1,000–$1,500 Check price

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Casio

Duro MDV106

$50–$100

Check Price Full Review

Frederique Constant

Classic Quartz Moonphase

$1,000–$1,500

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Specifications Compared

Feature	Casio Duro MDV106	Frederique Constant Classic Quartz Moonphase
Price	$50–$100	$1,000–$1,500
Case Size	44mm	40mm
Movement	Quartz Module 2784	Quartz FC-206
Caliber Type	Casio Quartz (Battery)	Swiss Quartz
Power Reserve	3-Year Battery	Battery
Water Resistance	200m (20 ATM) Diver	50m (5 ATM)
Crystal	Mineral Glass	Anti-Reflective Sapphire Crystal
Case Material	Stainless Steel	Stainless Steel
Origin	Casio (Japan)	Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Frederique Constant's approach

The Casio Duro MDV106 features a Stainless Steel case at 44mm with Mineral Glass protection. The Frederique Constant Classic Quartz Moonphase offers Stainless Steel construction at 40mm with Anti-Reflective Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Casio

Quartz Module 2784 vs Quartz FC-206

The Duro MDV106 runs the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery power reserve) at standard frequency. The Classic Quartz Moonphase uses the Quartz FC-206 (Swiss Quartz, Battery reserve) at standard. The Duro MDV106 edges ahead on power reserve.

📏

Wearability & Fit

Edge: Frederique Constant

44mm vs 40mm — different wrist presence

At 44mm, the Duro MDV106 has a bolder wrist presence compared to the Classic Quartz Moonphase at 40mm. Water resistance differs: 200m (20 ATM) Diver vs 50m (5 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio Duro MDV106 sits at $50–$100 and the Frederique Constant Classic Quartz Moonphase at $1,000–$1,500. On the specs that outlast any price: the Duro MDV106 uses Mineral Glass with 3-Year Battery, against Anti-Reflective Sapphire Crystal and Battery on the Classic Quartz Moonphase. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Casio

200m (20 ATM) Diver vs 50m (5 ATM)

The Duro MDV106 is rated to 200m (20 ATM) Diver while the Classic Quartz Moonphase handles 50m (5 ATM). The Duro MDV106 is better suited for water activities.

Our Verdict

Casio

Duro MDV106

Choose the Casio Duro MDV106 if you prioritize Casio Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) Diver water resistance. At $50–$100, it delivers Quartz Module 2784 with 3-Year Battery power reserve.

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Frederique Constant

Classic Quartz Moonphase

Choose the Frederique Constant Classic Quartz Moonphase if you value Swiss Quartz technology, Swiss Made heritage, and 40mm proportions. At $1,000–$1,500, the Quartz FC-206 with Battery power reserve makes it a compelling choice.

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The Bottom Line

The Casio Duro MDV106 and Frederique Constant Classic Quartz Moonphase represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Frederique Constant delivers Swiss Made engineering.

Frequently Asked Questions

Neither is objectively better — they serve different preferences. The Casio Duro MDV106 ($50–$100) offers Quartz Module 2784 with 3-Year Battery power reserve, while the Frederique Constant Classic Quartz Moonphase ($1,000–$1,500) features Quartz FC-206 with 50m (5 ATM) water resistance. Choose based on your priorities: Casio (Japan) craftsmanship vs Swiss Made engineering.

The Casio Duro MDV106 offers better upfront value, sitting a tier lower at $50–$100. However, the Frederique Constant Classic Quartz Moonphase may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Duro MDV106 at 44mm with 200m (20 ATM) Diver water resistance handles everyday situations. The Classic Quartz Moonphase at 40mm with 50m (5 ATM) is similarly capable. The Duro MDV106 uses Mineral Glass while the Classic Quartz Moonphase uses Anti-Reflective Sapphire Crystal. Sapphire resists scratches noticeably better than 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.