Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRW3500T-7 vs Junghans Form A Automatic

Casio's diver meets Junghans's dress watch

Quick Verdict

The Casio Pro Trek PRW3500T-7 ($250–$500) offers Tough Solar Quartz, Multi-Band 6 precision in the tier below the Junghans Form A Automatic ($1,000–$1,500). The Pro Trek PRW3500T-7 measures 56.9 × 53.4 × 14.8mm and is rated 200m (20 ATM). The Form A Automatic counters with Made in Germany craftsmanship and 50m (5 ATM) water resistance. Both are exceptional watches for their respective tiers.

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

Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.

Casio

Pro Trek PRW3500T-7

$250–$500

Check Price Full Review

Junghans

Form A Automatic

$1,000–$1,500

View the dossier Full Review

Specifications Compared

Feature	Casio Pro Trek PRW3500T-7	Junghans Form A Automatic
Price	$250–$500	$1,000–$1,500
Case Size	56.9 × 53.4 × 14.8mm	39.3mm
Movement	Tough Solar (Solar Quartz), Radio-Controlled	Automatic J800.2 (ETA 2824-2)
Caliber Type	Tough Solar Quartz, Multi-Band 6	Swiss ETA Base, German-Finished
Power Reserve	Tough Solar (Rechargeable)	38 Hours
Water Resistance	200m (20 ATM)	50m (5 ATM)
Crystal	Mineral Glass	Flat Sapphire with Anti-Reflective Coating
Case Material	Resin / Stainless Steel, Titanium Bracelet	Stainless Steel
Origin	Casio (Japan)	Made in Germany

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Junghans'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 Junghans Form A Automatic offers Stainless Steel construction at 39.3mm with Flat Sapphire with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Junghans

Tough Solar (Solar Quartz), Radio-Controlled vs Automatic J800.2 (ETA 2824-2)

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 Form A Automatic uses the Automatic J800.2 (ETA 2824-2) (Swiss ETA Base, German-Finished, 38 Hours reserve) at 28,800 vph (4 Hz). The Form A Automatic offers a longer power reserve.

📏

Wearability & Fit

Edge: Junghans

56.9 × 53.4 × 14.8mm vs 39.3mm — different wrist presence

At 56.9 × 53.4 × 14.8mm, the Pro Trek PRW3500T-7 has a bolder wrist presence compared to the Form A Automatic at 39.3mm. Water resistance differs: 200m (20 ATM) vs 50m (5 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio Pro Trek PRW3500T-7 sits at $250–$500 and the Junghans Form A Automatic at $1,000–$1,500. On the specs that outlast any price: the Pro Trek PRW3500T-7 uses Mineral Glass with Tough Solar (Rechargeable), against Flat Sapphire with Anti-Reflective Coating and 38 Hours on the Form A Automatic. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Casio

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

The Pro Trek PRW3500T-7 is rated to 200m (20 ATM) while the Form A Automatic handles 50m (5 ATM). The Pro Trek PRW3500T-7 is better suited for water activities.

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.

Check Price on Amazon

Junghans

Form A Automatic

Choose the Junghans Form A Automatic if you value Swiss ETA Base, German-Finished technology, Made in Germany heritage, and 39.3mm proportions. At $1,000–$1,500, the Automatic J800.2 (ETA 2824-2) with 38 Hours power reserve makes it a compelling choice.

View the dossier

Try Prime Free — Free Shipping on Both Watches Students & 18–24: start Prime for Young Adults free

The Bottom Line

The Casio Pro Trek PRW3500T-7 and Junghans Form A Automatic represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Junghans delivers Made in Germany engineering.

Frequently Asked Questions

The Junghans Form A 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. On price, the Casio Pro Trek PRW3500T-7 sits a band lower ($250–$500 against $1,000–$1,500), 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 Pro Trek PRW3500T-7 offers better upfront value, sitting a tier lower at $250–$500. However, the Junghans Form A Automatic may justify its premium with superior finishing, heritage, or resale value.

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 Form A Automatic at 39.3mm with 50m (5 ATM) is similarly capable. The Pro Trek PRW3500T-7 uses Mineral Glass while the Form A Automatic uses Flat Sapphire with Anti-Reflective Coating. Sapphire resists scratches noticeably better than mineral glass.

More Comparisons

Hamilton Ventura vs Junghans Form A

American pop-culture icon meets German Bauhaus minimalism

Casio Pro Trek PRG601 vs PRW3500T

Two Triple Sensor solar Pro Treks

Tag Heuer Carrera Chronograph vs Casio Pro Trek PRW3500T-7

Tag Heuer's chronograph meets Casio's diver

Explore These Watches

Casio Pro Trek PRW3500T-7 — Full Review Junghans Form A Automatic — Full Review Browse All Guides

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.