Tissot PRX Powermatic 80 35mm vs Seiko Prospex Alpinist
Tissot's timepiece meets Seiko's diver
Quick Verdict
The Tissot PRX Powermatic 80 35mm ($500–$1,000) and Seiko Prospex Alpinist ($500–$1,000) are closely matched timepieces at similar price points. The PRX Powermatic 80 35mm emphasizes ETA/Tissot Automatic engineering while the Prospex Alpinist focuses on Made in Japan craftsmanship.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Tissot PRX Powermatic 80 35mm | Seiko Prospex Alpinist |
|---|---|---|
| Price | $500–$1,000 | $500–$1,000 |
| Case Size | 35mm | 39.5mm |
| Movement | Automatic Powermatic 80 (Caliber 80.111) | Automatic Caliber 6R35 |
| Caliber Type | ETA/Tissot Automatic | In-House Automatic Manufacture |
| Power Reserve | 80 Hours | 70 Hours |
| Water Resistance | 100m (10 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire with Cyclops |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Tissot's design language vs Seiko's approach
The Tissot PRX Powermatic 80 35mm features a Stainless Steel case at 35mm with Sapphire Crystal protection. The Seiko Prospex Alpinist offers Stainless Steel construction at 39.5mm with Sapphire with Cyclops. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Powermatic 80 (Caliber 80.111) vs Automatic Caliber 6R35
The PRX Powermatic 80 35mm runs the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Prospex Alpinist uses the Automatic Caliber 6R35 (In-House Automatic Manufacture, 70 Hours reserve) at 21,600 vph (3 Hz). The PRX Powermatic 80 35mm edges ahead on power reserve.
Wearability & Fit
35mm vs 39.5mm — different wrist presence
At 35mm, the PRX Powermatic 80 35mm wears more compactly on smaller wrists compared to the Prospex Alpinist at 39.5mm. Water resistance differs: 100m (10 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Tissot PRX Powermatic 80 35mm sits at $500–$1,000 and the Seiko Prospex Alpinist at $500–$1,000. On the specs that outlast any price: the PRX Powermatic 80 35mm uses Sapphire Crystal with 80 Hours, against Sapphire with Cyclops and 70 Hours on the Prospex Alpinist. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 200m (20 ATM)
The PRX Powermatic 80 35mm is rated to 100m (10 ATM) while the Prospex Alpinist handles 200m (20 ATM). The Prospex Alpinist offers superior water resistance.
Our Verdict
Tissot
PRX Powermatic 80 35mm
Choose the Tissot PRX Powermatic 80 35mm if you prioritize ETA/Tissot Automatic engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $500–$1,000, it delivers Automatic Powermatic 80 (Caliber 80.111) with 80 Hours power reserve.
Check Price on AmazonSeiko
Prospex Alpinist
Choose the Seiko Prospex Alpinist if you value In-House Automatic Manufacture technology, Made in Japan heritage, and 39.5mm proportions. At $500–$1,000, the Automatic Caliber 6R35 with 70 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tissot PRX Powermatic 80 35mm and Seiko Prospex Alpinist represent two distinct approaches to fine watchmaking — the Tissot bringing Swiss Made tradition while Seiko delivers Made in 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.