Head-to-Head Comparison

Updated September 5, 2026

Citizen Tsuyosa Automatic vs Casio Duro MDV106 Black

Citizen's timepiece meets Casio's diver

Quick Verdict

The Casio Duro MDV106 Black ($50–$100) delivers Casio Quartz (Battery) technology in the tier below the Citizen Tsuyosa Automatic ($250–$500). The Duro MDV106 Black measures 44mm and is rated 200m (20 ATM) Diver. The Tsuyosa Automatic justifies its premium with Made in Japan heritage and Automatic Caliber 8210. Both represent excellent choices in the luxury watch category.

CitizenTsuyosa Automatic$250–$500 Check price CasioDuro MDV106 Black$50–$100 Check price

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Citizen

Tsuyosa Automatic

$250–$500

Check Price Full Review

Casio

Duro MDV106 Black

$50–$100

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Specifications Compared

Feature	Citizen Tsuyosa Automatic	Casio Duro MDV106 Black
Price	$250–$500	$50–$100
Case Size	40mm	44mm
Movement	Automatic Caliber 8210	Quartz Module 2784
Caliber Type	Citizen/Miyota In-House Automatic	Casio Quartz (Battery)
Power Reserve	40 Hours	3-Year Battery
Water Resistance	50m (5 ATM)	200m (20 ATM) Diver
Crystal	Sapphire Crystal with Cyclops	Mineral Glass
Case Material	Stainless Steel	Stainless Steel
Origin	Made in Japan	Casio (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Citizen's design language vs Casio's approach

The Citizen Tsuyosa Automatic features a Stainless Steel case at 40mm with Sapphire Crystal with Cyclops protection. The Casio Duro MDV106 Black offers Stainless Steel construction at 44mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Citizen

Automatic Caliber 8210 vs Quartz Module 2784

The Tsuyosa Automatic runs the Automatic Caliber 8210 (Citizen/Miyota In-House Automatic, 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Duro MDV106 Black uses the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery reserve) at standard. The Tsuyosa Automatic edges ahead on power reserve.

📏

Wearability & Fit

Edge: Citizen

40mm vs 44mm — different wrist presence

At 40mm, the Tsuyosa Automatic wears more compactly on smaller wrists compared to the Duro MDV106 Black at 44mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM) Diver.

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Citizen Tsuyosa Automatic sits at $250–$500 and the Casio Duro MDV106 Black at $50–$100. On the specs that outlast any price: the Tsuyosa Automatic uses Sapphire Crystal with Cyclops with 40 Hours, against Mineral Glass and 3-Year Battery on the Duro MDV106 Black. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

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

The Tsuyosa Automatic is rated to 50m (5 ATM) while the Duro MDV106 Black handles 200m (20 ATM) Diver. The Duro MDV106 Black offers superior water resistance.

Our Verdict

Citizen

Tsuyosa Automatic

Choose the Citizen Tsuyosa Automatic if you prioritize Citizen/Miyota In-House Automatic engineering, Made in Japan craftsmanship, and 50m (5 ATM) water resistance. At $250–$500, it delivers Automatic Caliber 8210 with 40 Hours power reserve.

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Casio

Duro MDV106 Black

Choose the Casio Duro MDV106 Black if you value Casio Quartz (Battery) technology, Casio (Japan) heritage, and 44mm proportions. At $50–$100, the Quartz Module 2784 with 3-Year Battery power reserve makes it a compelling choice.

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The Bottom Line

The Citizen Tsuyosa Automatic and Casio Duro MDV106 Black represent two distinct approaches to fine watchmaking — the Citizen bringing Made in Japan tradition while Casio delivers Casio (Japan) engineering.

Frequently Asked Questions

The Citizen Tsuyosa Automatic 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 50 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 $250–$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 Citizen Tsuyosa Automatic may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Tsuyosa Automatic at 40mm with 50m (5 ATM) water resistance handles everyday situations. The Duro MDV106 Black at 44mm with 200m (20 ATM) Diver is similarly capable. The Tsuyosa Automatic uses Sapphire Crystal with Cyclops while the Duro MDV106 Black uses Mineral Glass. 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.