Casio F-91W vs Casio G-Shock DW-5600 Square
Casio's timepiece meets Casio's diver
Quick Verdict
The Casio F-91W (Under $50) and Casio G-Shock DW-5600 Square ($50–$100) are closely matched timepieces at similar price points. The F-91W emphasizes Casio Digital Quartz (Battery) engineering while the G-Shock DW-5600 Square focuses on Casio (Japan) craftsmanship.
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Specifications Compared
| Feature | Casio F-91W | Casio G-Shock DW-5600 Square |
|---|---|---|
| Price | Under $50 | $50–$100 |
| Case Size | 35mm | 42.8mm (Square) |
| Movement | Quartz Module 593 | Quartz Module 3229 |
| Caliber Type | Casio Digital Quartz (Battery) | Casio Digital Quartz (Battery) |
| Power Reserve | 7-Year Battery | 2-Year Battery |
| Water Resistance | 30m (Splash Resistant) | 200m (20 ATM) |
| Crystal | Acrylic | Mineral Glass |
| Case Material | Resin | Resin |
| Origin | Casio (Japan) | Casio (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Casio's approach
The Casio F-91W features a Resin case at 35mm with Acrylic protection. The Casio G-Shock DW-5600 Square offers Resin construction at 42.8mm (Square) with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 593 vs Quartz Module 3229
The F-91W runs the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery power reserve) at standard frequency. The G-Shock DW-5600 Square uses the Quartz Module 3229 (Casio Digital Quartz (Battery), 2-Year Battery reserve) at standard. The F-91W edges ahead on power reserve.
Wearability & Fit
35mm vs 42.8mm (Square) — different wrist presence
At 35mm, the F-91W wears more compactly on smaller wrists compared to the G-Shock DW-5600 Square at 42.8mm (Square). Water resistance differs: 30m (Splash Resistant) vs 200m (20 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Casio F-91W sits at Under $50 and the Casio G-Shock DW-5600 Square at $50–$100. On the specs that outlast any price: the F-91W uses Acrylic with 7-Year Battery, against Mineral Glass and 2-Year Battery on the G-Shock DW-5600 Square. Service intervals are typically 5-7 years for both.
Water Resistance
30m (Splash Resistant) vs 200m (20 ATM)
The F-91W is rated to 30m (Splash Resistant) while the G-Shock DW-5600 Square handles 200m (20 ATM). The G-Shock DW-5600 Square 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 AmazonCasio
G-Shock DW-5600 Square
Choose the Casio G-Shock DW-5600 Square if you value Casio Digital Quartz (Battery) technology, Casio (Japan) heritage, and 42.8mm (Square) proportions. At $50–$100, the Quartz Module 3229 with 2-Year Battery power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio F-91W and Casio G-Shock DW-5600 Square represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Casio delivers Casio (Japan) 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.