Head-to-Head Comparison

Updated September 5, 2026

Casio Duro MDV106 Black vs Frederique Constant Highlife Automatic COSC

Casio's diver meets Frederique Constant's timepiece

Quick Verdict

The Casio Duro MDV106 Black ($50–$100) offers Casio Quartz (Battery) precision in the tier below the Frederique Constant Highlife Automatic COSC ($1,500–$2,500). The Duro MDV106 Black measures 44mm and is rated 200m (20 ATM) Diver. The Highlife Automatic COSC counters with Swiss Made craftsmanship and 100m (10 ATM) water resistance. Both are exceptional watches for their respective tiers.

CasioDuro MDV106 Black$50–$100 Check price Frederique ConstantHighlife Automatic COSC$1,500–$2,500 Check price

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Casio

Duro MDV106 Black

$50–$100

Check Price Full Review

Frederique Constant

Highlife Automatic COSC

$1,500–$2,500

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Specifications Compared

Feature	Casio Duro MDV106 Black	Frederique Constant Highlife Automatic COSC
Price	$50–$100	$1,500–$2,500
Case Size	44mm	39mm
Movement	Quartz Module 2784	Automatic FC-303 (COSC)
Caliber Type	Casio Quartz (Battery)	COSC-Certified Automatic
Power Reserve	3-Year Battery	38 Hours
Water Resistance	200m (20 ATM) Diver	100m (10 ATM)
Crystal	Mineral Glass	Convex Sapphire
Case Material	Stainless Steel	Stainless Steel
Origin	Casio (Japan)	Swiss Made

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Frederique Constant's approach

The Casio Duro MDV106 Black features a Stainless Steel case at 44mm with Mineral Glass protection. The Frederique Constant Highlife Automatic COSC offers Stainless Steel construction at 39mm with Convex Sapphire. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Frederique Constant

Quartz Module 2784 vs Automatic FC-303 (COSC)

The Duro MDV106 Black runs the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery power reserve) at standard frequency. The Highlife Automatic COSC uses the Automatic FC-303 (COSC) (COSC-Certified Automatic, 38 Hours reserve) at 28,800 vph (4 Hz). The Highlife Automatic COSC offers a longer power reserve.

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Wearability & Fit

Edge: Frederique Constant

44mm vs 39mm — different wrist presence

At 44mm, the Duro MDV106 Black has a bolder wrist presence compared to the Highlife Automatic COSC at 39mm. Water resistance differs: 200m (20 ATM) Diver vs 100m (10 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio Duro MDV106 Black sits at $50–$100 and the Frederique Constant Highlife Automatic COSC at $1,500–$2,500. On the specs that outlast any price: the Duro MDV106 Black uses Mineral Glass with 3-Year Battery, against Convex Sapphire and 38 Hours on the Highlife Automatic COSC. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

200m (20 ATM) Diver vs 100m (10 ATM)

The Duro MDV106 Black is rated to 200m (20 ATM) Diver while the Highlife Automatic COSC handles 100m (10 ATM). The Duro MDV106 Black is better suited for water activities.

Our Verdict

Casio

Duro MDV106 Black

Choose the Casio Duro MDV106 Black 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

Highlife Automatic COSC

Choose the Frederique Constant Highlife Automatic COSC if you value COSC-Certified Automatic technology, Swiss Made heritage, and 39mm proportions. At $1,500–$2,500, the Automatic FC-303 (COSC) with 38 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Casio Duro MDV106 Black and Frederique Constant Highlife Automatic COSC represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Frederique Constant delivers Swiss Made engineering.

Frequently Asked Questions

The Frederique Constant Highlife Automatic COSC is the better buy if you want a mechanical movement; the Casio Duro MDV106 Black is the better buy if you want quartz accuracy with no servicing. For water, the Casio Duro MDV106 Black is rated 200 m against 100 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Casio Duro MDV106 Black sits a band lower ($50–$100 against $1,500–$2,500), 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 Duro MDV106 Black offers better upfront value, sitting a tier lower at $50–$100. However, the Frederique Constant Highlife Automatic COSC may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Duro MDV106 Black at 44mm with 200m (20 ATM) Diver water resistance handles everyday situations. The Highlife Automatic COSC at 39mm with 100m (10 ATM) is similarly capable. The Duro MDV106 Black uses Mineral Glass while the Highlife Automatic COSC uses Convex Sapphire. 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.