Tissot PRX Powermatic 80 vs Casio F-91W
Two timepieces compared — $500–$1,000 vs Under $50
Quick Verdict
The Casio F-91W (Under $50) delivers Casio Digital Quartz (Battery) technology in the tier below the Tissot PRX Powermatic 80 ($500–$1,000). The F-91W measures 35mm and is rated 30m (Splash Resistant). The PRX Powermatic 80 justifies its premium with Swiss Made heritage and Automatic Powermatic 80.111. Both represent excellent choices in the timepiece category.
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Specifications Compared
| Feature | Tissot PRX Powermatic 80 | Casio F-91W |
|---|---|---|
| Price | $500–$1,000 | Under $50 |
| Case Size | 40mm | 35mm |
| Movement | Automatic Powermatic 80.111 | Quartz Module 593 |
| Caliber Type | In-House Automatic (ETA C07.111 base) | Casio Digital Quartz (Battery) |
| Power Reserve | 80 Hours | 7-Year Battery |
| Water Resistance | 100m (10 ATM) | 30m (Splash Resistant) |
| Crystal | Scratch-resistant Sapphire | Acrylic |
| Case Material | 316L Stainless Steel | Resin |
| Origin | Swiss Made | Casio (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Tissot's design language vs Casio's approach
The Tissot PRX Powermatic 80 features a 316L Stainless Steel case at 40mm with Scratch-resistant Sapphire protection. The Casio F-91W offers Resin construction at 35mm with Acrylic. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Powermatic 80.111 vs Quartz Module 593
The PRX Powermatic 80 runs the Automatic Powermatic 80.111 (In-House Automatic (ETA C07.111 base), 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The F-91W uses the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery reserve) at standard. The PRX Powermatic 80 edges ahead on power reserve.
Wearability & Fit
40mm vs 35mm — different wrist presence
At 40mm, the PRX Powermatic 80 has a bolder wrist presence compared to the F-91W at 35mm. Water resistance differs: 100m (10 ATM) vs 30m (Splash Resistant).
Value & Cost of Ownership
Casio sits in the lower tier
The Tissot PRX Powermatic 80 sits at $500–$1,000 and the Casio F-91W at Under $50. On the specs that outlast any price: the PRX Powermatic 80 uses Scratch-resistant Sapphire with 80 Hours, against Acrylic and 7-Year Battery on the F-91W. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 30m (Splash Resistant)
The PRX Powermatic 80 is rated to 100m (10 ATM) while the F-91W handles 30m (Splash Resistant). The PRX Powermatic 80 is better suited for water activities.
Our Verdict
Tissot
PRX Powermatic 80
Choose the Tissot PRX Powermatic 80 if you prioritize In-House Automatic (ETA C07.111 base) engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $500–$1,000, it delivers Automatic Powermatic 80.111 with 80 Hours power reserve.
Check Price on AmazonCasio
F-91W
Choose the Casio F-91W if you value Casio Digital Quartz (Battery) technology, Casio (Japan) heritage, and 35mm proportions. At Under $50, the Quartz Module 593 with 7-Year Battery power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tissot PRX Powermatic 80 and Casio F-91W represent two distinct approaches to the timepiece category — the Tissot bringing Swiss Made tradition while Casio delivers Casio (Japan) engineering.
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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.