Casio F-91W vs Junghans Form A Automatic
Casio's timepiece meets Junghans's dress watch
Quick Verdict
The Casio F-91W (Under $50) offers Casio Digital Quartz (Battery) precision in the tier below the Junghans Form A Automatic ($1,000–$1,500). The F-91W measures 35mm and is rated 30m (Splash Resistant). The Form A Automatic counters with Made in Germany craftsmanship and 50m (5 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Casio F-91W | Junghans Form A Automatic |
|---|---|---|
| Price | Under $50 | $1,000–$1,500 |
| Case Size | 35mm | 39.3mm |
| Movement | Quartz Module 593 | Automatic J800.2 (ETA 2824-2) |
| Caliber Type | Casio Digital Quartz (Battery) | Swiss ETA Base, German-Finished |
| Power Reserve | 7-Year Battery | 38 Hours |
| Water Resistance | 30m (Splash Resistant) | 50m (5 ATM) |
| Crystal | Acrylic | Flat Sapphire with Anti-Reflective Coating |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Made in Germany |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Junghans's approach
The Casio F-91W features a Resin case at 35mm with Acrylic 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
Quartz Module 593 vs Automatic J800.2 (ETA 2824-2)
The F-91W runs the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery 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
35mm vs 39.3mm — different wrist presence
At 35mm, the F-91W wears more compactly on smaller wrists compared to the Form A Automatic at 39.3mm. Water resistance differs: 30m (Splash Resistant) vs 50m (5 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio F-91W sits at Under $50 and the Junghans Form A Automatic at $1,000–$1,500. On the specs that outlast any price: the F-91W uses Acrylic with 7-Year Battery, 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
30m (Splash Resistant) vs 50m (5 ATM)
The F-91W is rated to 30m (Splash Resistant) while the Form A Automatic handles 50m (5 ATM). The Form A Automatic offers superior water resistance.
Our Verdict
Casio
F-91W
Choose the Casio F-91W if you prioritize Casio Digital Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 30m (Splash Resistant) water resistance. At Under $50, it delivers Quartz Module 593 with 7-Year Battery power reserve.
Check Price on AmazonJunghans
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.
Check Price on AmazonThe Bottom Line
The Casio F-91W 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
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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.