Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRW3500T-7 vs Orient Kamasu Automatic Diver

Two divers compared — $250–$500 vs $250–$500

Quick Verdict

The Casio Pro Trek PRW3500T-7 ($250–$500) and Orient Kamasu Automatic Diver ($250–$500) are closely matched divers at similar price points. The Pro Trek PRW3500T-7 emphasizes Tough Solar Quartz, Multi-Band 6 engineering while the Kamasu Automatic Diver focuses on Made in Japan craftsmanship.

CasioPro Trek PRW3500T-7$250–$500 Check price View the dossier

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Casio

Pro Trek PRW3500T-7

$250–$500

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Orient

Kamasu Automatic Diver

$250–$500

View the dossier Full Review

Specifications Compared

Feature	Casio Pro Trek PRW3500T-7	Orient Kamasu Automatic Diver
Price	$250–$500	$250–$500
Case Size	56.9 × 53.4 × 14.8mm	41.8mm
Movement	Tough Solar (Solar Quartz), Radio-Controlled	Automatic Caliber F6922
Caliber Type	Tough Solar Quartz, Multi-Band 6	Orient In-House Automatic
Power Reserve	Tough Solar (Rechargeable)	40 Hours
Water Resistance	200m (20 ATM)	200m (20 ATM)
Crystal	Mineral Glass	Sapphire Crystal
Case Material	Resin / Stainless Steel, Titanium Bracelet	Stainless Steel
Origin	Casio (Japan)	Made in Japan

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Orient's approach

The Casio Pro Trek PRW3500T-7 features a Resin / Stainless Steel, Titanium Bracelet case at 56.9 × 53.4 × 14.8mm with Mineral Glass protection. The Orient Kamasu Automatic Diver offers Stainless Steel construction at 41.8mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Orient

Tough Solar (Solar Quartz), Radio-Controlled vs Automatic Caliber F6922

The Pro Trek PRW3500T-7 runs the Tough Solar (Solar Quartz), Radio-Controlled (Tough Solar Quartz, Multi-Band 6, Tough Solar (Rechargeable) power reserve) at standard frequency. The Kamasu Automatic Diver uses the Automatic Caliber F6922 (Orient In-House Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Kamasu Automatic Diver offers a longer power reserve.

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Wearability & Fit

Edge: Orient

56.9 × 53.4 × 14.8mm vs 41.8mm — different wrist presence

At 56.9 × 53.4 × 14.8mm, the Pro Trek PRW3500T-7 has a bolder wrist presence compared to the Kamasu Automatic Diver at 41.8mm. Water resistance differs: 200m (20 ATM) vs 200m (20 ATM).

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Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

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

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Water Resistance

Edge: Draw

200m (20 ATM) vs 200m (20 ATM)

The Pro Trek PRW3500T-7 is rated to 200m (20 ATM) while the Kamasu Automatic Diver handles 200m (20 ATM). Both offer identical water resistance ratings.

Our Verdict

Casio

Pro Trek PRW3500T-7

Choose the Casio Pro Trek PRW3500T-7 if you prioritize Tough Solar Quartz, Multi-Band 6 engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) water resistance. At $250–$500, it delivers Tough Solar (Solar Quartz), Radio-Controlled with Tough Solar (Rechargeable) power reserve.

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Orient

Kamasu Automatic Diver

Choose the Orient Kamasu Automatic Diver if you value Orient In-House Automatic technology, Made in Japan heritage, and 41.8mm proportions. At $250–$500, the Automatic Caliber F6922 with 40 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Casio Pro Trek PRW3500T-7 and Orient Kamasu Automatic Diver represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Orient delivers Made in Japan engineering.

Frequently Asked Questions

The Orient Kamasu Automatic Diver 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. 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 Pro Trek PRW3500T-7 emphasizes Tough Solar Quartz, Multi-Band 6 technology while the Kamasu Automatic Diver prioritizes Orient In-House Automatic precision.

Both are suitable for daily wear. The Pro Trek PRW3500T-7 at 56.9 × 53.4 × 14.8mm with 200m (20 ATM) water resistance handles everyday situations. The Kamasu Automatic Diver at 41.8mm with 200m (20 ATM) is similarly capable. The Pro Trek PRW3500T-7 uses Mineral Glass while the Kamasu Automatic Diver uses 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.