Updated
Casio F-91W vs Citizen Eco-Drive Weekender Garrison
Casio's timepiece meets Citizen's field watch
Quick Verdict
The Casio F-91W (Under $50) offers Casio Digital Quartz (Battery) precision in the tier below the Citizen Eco-Drive Weekender Garrison ($100–$150). The F-91W measures 35mm and is rated 30m (Splash Resistant). The Eco-Drive Weekender Garrison counters with Citizen (Japan) craftsmanship and 100m (10 ATM) water resistance. Both are exceptional watches for their respective tiers.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Casio F-91W | Citizen Eco-Drive Weekender Garrison |
|---|---|---|
| Price | Under $50 | $100–$150 |
| Case Size | 35mm | 37mm |
| Movement | Quartz Module 593 | Eco-Drive Caliber E101 |
| Caliber Type | Casio Digital Quartz (Battery) | Eco-Drive Solar Quartz (No Battery Change) |
| Power Reserve | 7-Year Battery | 6 Months (Solar, Full Charge) |
| Water Resistance | 30m (Splash Resistant) | 100m (10 ATM) |
| Crystal | Acrylic | Mineral Glass |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Citizen (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Citizen's approach
The Casio F-91W features a Resin case at 35mm with Acrylic protection. The Citizen Eco-Drive Weekender Garrison offers Stainless Steel construction at 37mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 593 vs Eco-Drive Caliber E101
The F-91W runs the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery power reserve) at standard frequency. The Eco-Drive Weekender Garrison uses the Eco-Drive Caliber E101 (Eco-Drive Solar Quartz (No Battery Change), 6 Months (Solar, Full Charge) reserve) at standard. The F-91W edges ahead on power reserve.
Wearability & Fit
35mm vs 37mm — different wrist presence
At 35mm, the F-91W wears more compactly on smaller wrists compared to the Eco-Drive Weekender Garrison at 37mm. Water resistance differs: 30m (Splash Resistant) vs 100m (10 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio F-91W sits at Under $50 and the Citizen Eco-Drive Weekender Garrison at $100–$150. On the specs that outlast any price: the F-91W uses Acrylic with 7-Year Battery, against Mineral Glass and 6 Months (Solar, Full Charge) on the Eco-Drive Weekender Garrison. Service intervals are typically 5-7 years for both.
Water Resistance
30m (Splash Resistant) vs 100m (10 ATM)
The F-91W is rated to 30m (Splash Resistant) while the Eco-Drive Weekender Garrison handles 100m (10 ATM). The Eco-Drive Weekender Garrison 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 AmazonCitizen
Eco-Drive Weekender Garrison
Choose the Citizen Eco-Drive Weekender Garrison if you value Eco-Drive Solar Quartz (No Battery Change) technology, Citizen (Japan) heritage, and 37mm proportions. At $100–$150, the Eco-Drive Caliber E101 with 6 Months (Solar, Full Charge) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio F-91W and Citizen Eco-Drive Weekender Garrison represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Citizen delivers Citizen (Japan) engineering.
Frequently Asked Questions
More Comparisons
Explore These Watches
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.