Casio F-91W vs Oris Aquis Date Calibre 400
Casio's timepiece meets Oris's diver
Quick Verdict
The Casio F-91W (~$20) offers Casio Digital Quartz (Battery) precision at $2,575 less than the Oris Aquis Date Calibre 400 (~$2,595). The Aquis Date Calibre 400 counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective price points.
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Specifications Compared
| Feature | Casio F-91W | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | ~$20 | ~$2,595 |
| Case Size | 35mm | 41.5mm |
| Movement | Quartz Module 593 | Automatic Calibre 400 |
| Caliber Type | Casio Digital Quartz (Battery) | Oris In-House Manufacture |
| Power Reserve | 7-Year Battery | 120 Hours (5 Days) |
| Water Resistance | 30m (Splash Resistant) | 300m (30 ATM) |
| Crystal | Acrylic | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Oris's approach
Movement & Performance
Quartz Module 593 vs Automatic Calibre 400
Wearability & Fit
35mm vs 41.5mm — different wrist presence
Value & Cost of Ownership
Casio is $2,575 more affordable
Water Resistance
30m (Splash Resistant) vs 300m (30 ATM)
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 ~$20, it delivers Quartz Module 593 with 7-Year Battery power reserve.
Check Price on AmazonOris
Aquis Date Calibre 400
Choose the Oris Aquis Date Calibre 400 if you value Oris In-House Manufacture technology, Swiss Made heritage, and 41.5mm proportions. At ~$2,595, the Automatic Calibre 400 with 120 Hours (5 Days) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio F-91W and Oris Aquis Date Calibre 400 represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Oris delivers Swiss Made engineering.
Frequently Asked Questions
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