Head-to-Head Comparison

Updated September 5, 2026

Citizen Tsuyosa Automatic vs Casio Pro Trek PRW3500T-7

Citizen's timepiece meets Casio's diver

Quick Verdict

The Citizen Tsuyosa Automatic ($250–$500) and Casio Pro Trek PRW3500T-7 ($250–$500) are closely matched timepieces at similar price points. The Tsuyosa Automatic emphasizes Citizen/Miyota In-House Automatic engineering while the Pro Trek PRW3500T-7 focuses on Casio (Japan) craftsmanship.

CitizenTsuyosa Automatic$250–$500 Check price CasioPro Trek PRW3500T-7$250–$500 Check price

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Citizen

Tsuyosa Automatic

$250–$500

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Casio

Pro Trek PRW3500T-7

$250–$500

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Specifications Compared

Feature	Citizen Tsuyosa Automatic	Casio Pro Trek PRW3500T-7
Price	$250–$500	$250–$500
Case Size	40mm	56.9 × 53.4 × 14.8mm
Movement	Automatic Caliber 8210	Tough Solar (Solar Quartz), Radio-Controlled
Caliber Type	Citizen/Miyota In-House Automatic	Tough Solar Quartz, Multi-Band 6
Power Reserve	40 Hours	Tough Solar (Rechargeable)
Water Resistance	50m (5 ATM)	200m (20 ATM)
Crystal	Sapphire Crystal with Cyclops	Mineral Glass
Case Material	Stainless Steel	Resin / Stainless Steel, Titanium Bracelet
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 Pro Trek PRW3500T-7 offers Resin / Stainless Steel, Titanium Bracelet construction at 56.9 × 53.4 × 14.8mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Citizen

Automatic Caliber 8210 vs Tough Solar (Solar Quartz), Radio-Controlled

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 Pro Trek PRW3500T-7 uses the Tough Solar (Solar Quartz), Radio-Controlled (Tough Solar Quartz, Multi-Band 6, Tough Solar (Rechargeable) reserve) at standard. The Tsuyosa Automatic edges ahead on power reserve.

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Wearability & Fit

Edge: Citizen

40mm vs 56.9 × 53.4 × 14.8mm — different wrist presence

At 40mm, the Tsuyosa Automatic wears more compactly on smaller wrists compared to the Pro Trek PRW3500T-7 at 56.9 × 53.4 × 14.8mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM).

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Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Citizen Tsuyosa Automatic sits at $250–$500 and the Casio Pro Trek PRW3500T-7 at $250–$500. On the specs that outlast any price: the Tsuyosa Automatic uses Sapphire Crystal with Cyclops with 40 Hours, against Mineral Glass and Tough Solar (Rechargeable) on the Pro Trek PRW3500T-7. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

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

The Tsuyosa Automatic is rated to 50m (5 ATM) while the Pro Trek PRW3500T-7 handles 200m (20 ATM). The Pro Trek PRW3500T-7 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

Pro Trek PRW3500T-7

Choose the Casio Pro Trek PRW3500T-7 if you value Tough Solar Quartz, Multi-Band 6 technology, Casio (Japan) heritage, and 56.9 × 53.4 × 14.8mm proportions. At $250–$500, the Tough Solar (Solar Quartz), Radio-Controlled with Tough Solar (Rechargeable) power reserve makes it a compelling choice.

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The Bottom Line

The Citizen Tsuyosa Automatic and Casio Pro Trek PRW3500T-7 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 Pro Trek PRW3500T-7 is the better buy if you want solar power and quartz accuracy with no servicing. For water, the Casio Pro Trek PRW3500T-7 is rated 200 m against 50 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 Tsuyosa Automatic emphasizes Citizen/Miyota In-House Automatic technology while the Pro Trek PRW3500T-7 prioritizes Tough Solar Quartz, Multi-Band 6 precision.

Both are suitable for daily wear. The Tsuyosa Automatic at 40mm with 50m (5 ATM) water resistance handles everyday situations. The Pro Trek PRW3500T-7 at 56.9 × 53.4 × 14.8mm with 200m (20 ATM) is similarly capable. The Tsuyosa Automatic uses Sapphire Crystal with Cyclops while the Pro Trek PRW3500T-7 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.