Casio F-91W vs Rado True Square Automatic
Two timepieces compared — Under $50 vs $1,500–$2,500
Quick Verdict
The Casio F-91W (Under $50) offers Casio Digital Quartz (Battery) precision in the tier below the Rado True Square Automatic ($1,500–$2,500). The F-91W measures 35mm and is rated 30m (Splash Resistant). The True Square Automatic counters with Swiss Made craftsmanship and 50m (5 ATM) water resistance. Both are exceptional timepieces for their respective tiers.
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Specifications Compared
| Feature | Casio F-91W | Rado True Square Automatic |
|---|---|---|
| Price | Under $50 | $1,500–$2,500 |
| Case Size | 35mm | 38mm (Square) |
| Movement | Quartz Module 593 | Automatic ETA C07.611 |
| Caliber Type | Casio Digital Quartz (Battery) | Powermatic 80 (ETA-Based) |
| Power Reserve | 7-Year Battery | 80 Hours |
| Water Resistance | 30m (Splash Resistant) | 50m (5 ATM) |
| Crystal | Acrylic | Sapphire (Anti-Reflective) |
| Case Material | Resin | Monobloc High-Tech Ceramic |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Rado's approach
The Casio F-91W features a Resin case at 35mm with Acrylic protection. The Rado True Square Automatic offers Monobloc High-Tech Ceramic construction at 38mm (Square) with Sapphire (Anti-Reflective). Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 593 vs Automatic ETA C07.611
The F-91W runs the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery power reserve) at standard frequency. The True Square Automatic uses the Automatic ETA C07.611 (Powermatic 80 (ETA-Based), 80 Hours reserve) at 21,600 vph (3 Hz). The True Square Automatic offers a longer power reserve.
Wearability & Fit
35mm vs 38mm (Square) — different wrist presence
At 35mm, the F-91W wears more compactly on smaller wrists compared to the True Square Automatic at 38mm (Square). 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 Rado True Square Automatic at $1,500–$2,500. On the specs that outlast any price: the F-91W uses Acrylic with 7-Year Battery, against Sapphire (Anti-Reflective) and 80 Hours on the True Square 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 True Square Automatic handles 50m (5 ATM). The True Square 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 AmazonRado
True Square Automatic
Choose the Rado True Square Automatic if you value Powermatic 80 (ETA-Based) technology, Swiss Made heritage, and 38mm (Square) proportions. At $1,500–$2,500, the Automatic ETA C07.611 with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio F-91W and Rado True Square Automatic represent two distinct approaches to the timepiece category — the Casio bringing Casio (Japan) tradition while Rado delivers Swiss Made 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.