Updated
Tissot PRX Powermatic 80 vs Cartier Santos Octagon (steel, black dial)
Two timepieces compared — $500–$1,000 vs $10,000–$25,000
Quick Verdict
The Tissot PRX Powermatic 80 ($500–$1,000) offers In-House Automatic (ETA C07.111 base) precision in the tier below the Cartier Santos Octagon (steel, black dial) ($10,000–$25,000). The PRX Powermatic 80 measures 40mm and is rated 100m (10 ATM). The Santos Octagon (steel, black dial) counters with Swiss Made craftsmanship and Not stated by the listing water resistance. Both are exceptional timepieces for their respective tiers.
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Specifications Compared
| Feature | Tissot PRX Powermatic 80 | Cartier Santos Octagon (steel, black dial) |
|---|---|---|
| Price | $500–$1,000 | $10,000–$25,000 |
| Case Size | 40mm | About 29mm |
| Movement | Automatic Powermatic 80.111 | Quartz or automatic (the listing says both; the Octagon was made in each) |
| Caliber Type | In-House Automatic (ETA C07.111 base) | Cartier, per the version |
| Power Reserve | 80 Hours | Not stated |
| Water Resistance | 100m (10 ATM) | Not stated by the listing |
| Crystal | Scratch-resistant Sapphire | Sapphire Crystal |
| Case Material | 316L Stainless Steel | Stainless steel, octagonal screwed bezel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Tissot's design language vs Cartier's approach
The Tissot PRX Powermatic 80 features a 316L Stainless Steel case at 40mm with Scratch-resistant Sapphire protection. The Cartier Santos Octagon (steel, black dial) offers Stainless steel, octagonal screwed bezel construction at About 29mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Powermatic 80.111 vs Quartz or automatic (the listing says both; the Octagon was made in each)
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 Santos Octagon (steel, black dial) uses the Quartz or automatic (the listing says both; the Octagon was made in each) (Cartier, per the version, Not stated reserve) at standard. The PRX Powermatic 80 edges ahead on power reserve.
Wearability & Fit
40mm vs About 29mm — different wrist presence
At 40mm, the PRX Powermatic 80 has a bolder wrist presence compared to the Santos Octagon (steel, black dial) at About 29mm. Water resistance differs: 100m (10 ATM) vs Not stated by the listing.
Value & Cost of Ownership
Tissot sits in the lower tier
The Tissot PRX Powermatic 80 sits at $500–$1,000 and the Cartier Santos Octagon (steel, black dial) at $10,000–$25,000. On the specs that outlast any price: the PRX Powermatic 80 uses Scratch-resistant Sapphire with 80 Hours, against Sapphire Crystal and Not stated on the Santos Octagon (steel, black dial). Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs Not stated by the listing
The PRX Powermatic 80 is rated to 100m (10 ATM) while the Santos Octagon (steel, black dial) handles Not stated by the listing. 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 AmazonCartier
Santos Octagon (steel, black dial)
Choose the Cartier Santos Octagon (steel, black dial) if you value Cartier, per the version technology, Swiss Made heritage, and About 29mm proportions. At $10,000–$25,000, the Quartz or automatic (the listing says both; the Octagon was made in each) with Not stated power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tissot PRX Powermatic 80 and Cartier Santos Octagon (steel, black dial) represent two distinct approaches to the timepiece category — the Tissot bringing Swiss Made tradition while Cartier 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.