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Tissot PRX Powermatic 80 vs Zenith Chronomaster El Primero Open Power Reserve (18k rose gold)
Tissot's timepiece meets Zenith's chronograph
Quick Verdict
The Tissot PRX Powermatic 80 ($500–$1,000) offers In-House Automatic (ETA C07.111 base) precision in the tier below the Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) ($10,000–$25,000). The PRX Powermatic 80 measures 40mm and is rated 100m (10 ATM). The Chronomaster El Primero Open Power Reserve (18k rose gold) counters with Swiss Made craftsmanship and 100m (10 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Zenith
Chronomaster El Primero Open Power Reserve (18k rose gold)
$10,000–$25,000
Specifications Compared
| Feature | Tissot PRX Powermatic 80 | Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) |
|---|---|---|
| Price | $500–$1,000 | $10,000–$25,000 |
| Case Size | 40mm | 42mm |
| Movement | Automatic Powermatic 80.111 | Automatic chronograph, Zenith El Primero 4021 |
| Caliber Type | In-House Automatic (ETA C07.111 base) | El Primero 4021, 36,000 vph (5 Hz), column wheel, automatic |
| Power Reserve | 80 Hours | About 50 hours, with indicator |
| Water Resistance | 100m (10 ATM) | 100m (10 ATM) |
| Crystal | Scratch-resistant Sapphire | Sapphire Crystal, sapphire exhibition caseback |
| Case Material | 316L Stainless Steel | 18k rose gold |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Tissot's design language vs Zenith's approach
The Tissot PRX Powermatic 80 features a 316L Stainless Steel case at 40mm with Scratch-resistant Sapphire protection. The Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) offers 18k rose gold construction at 42mm with Sapphire Crystal, sapphire exhibition caseback. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Powermatic 80.111 vs Automatic chronograph, Zenith El Primero 4021
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 Chronomaster El Primero Open Power Reserve (18k rose gold) uses the Automatic chronograph, Zenith El Primero 4021 (El Primero 4021, 36,000 vph (5 Hz), column wheel, automatic, About 50 hours, with indicator reserve) at standard. The PRX Powermatic 80 edges ahead on power reserve.
Wearability & Fit
40mm vs 42mm — different wrist presence
At 40mm, the PRX Powermatic 80 wears more compactly on smaller wrists compared to the Chronomaster El Primero Open Power Reserve (18k rose gold) at 42mm. Water resistance differs: 100m (10 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Tissot sits in the lower tier
The Tissot PRX Powermatic 80 sits at $500–$1,000 and the Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) 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, sapphire exhibition caseback and About 50 hours, with indicator on the Chronomaster El Primero Open Power Reserve (18k rose gold). Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 100m (10 ATM)
The PRX Powermatic 80 is rated to 100m (10 ATM) while the Chronomaster El Primero Open Power Reserve (18k rose gold) handles 100m (10 ATM). Both offer identical water resistance ratings.
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 AmazonZenith
Chronomaster El Primero Open Power Reserve (18k rose gold)
Choose the Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) if you value El Primero 4021, 36,000 vph (5 Hz), column wheel, automatic technology, Swiss Made heritage, and 42mm proportions. At $10,000–$25,000, the Automatic chronograph, Zenith El Primero 4021 with About 50 hours, with indicator power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tissot PRX Powermatic 80 and Zenith Chronomaster El Primero Open Power Reserve (18k rose gold) represent two distinct approaches to fine watchmaking — the Tissot bringing Swiss Made tradition while Zenith 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.