Citizen Promaster Sea Eco-Drive Diver vs Tissot PRX Powermatic 80 35mm
Citizen's diver meets Tissot's timepiece
Quick Verdict
The Citizen Promaster Sea Eco-Drive Diver ($250–$500) offers Citizen Eco-Drive (Solar Quartz) precision in the tier below the Tissot PRX Powermatic 80 35mm ($500–$1,000). The Promaster Sea Eco-Drive Diver measures 44mm and is rated 200m (20 ATM) ISO 6425. The PRX Powermatic 80 35mm counters with Swiss Made 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 | Citizen Promaster Sea Eco-Drive Diver | Tissot PRX Powermatic 80 35mm |
|---|---|---|
| Price | $250–$500 | $500–$1,000 |
| Case Size | 44mm | 35mm |
| Movement | Eco-Drive Caliber E168 | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | Citizen Eco-Drive (Solar Quartz) | ETA/Tissot Automatic |
| Power Reserve | — | 80 Hours |
| Water Resistance | 200m (20 ATM) ISO 6425 | 100m (10 ATM) |
| Crystal | Mineral Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Tissot's approach
The Citizen Promaster Sea Eco-Drive Diver features a Stainless Steel case at 44mm with Mineral Crystal protection. The Tissot PRX Powermatic 80 35mm offers Stainless Steel construction at 35mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Eco-Drive Caliber E168 vs Automatic Powermatic 80 (Caliber 80.111)
The Promaster Sea Eco-Drive Diver runs the Eco-Drive Caliber E168 (Citizen Eco-Drive (Solar Quartz), standard power reserve) at standard frequency. The PRX Powermatic 80 35mm uses the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours reserve) at 21,600 vph (3 Hz). The PRX Powermatic 80 35mm offers a longer power reserve.
Wearability & Fit
44mm vs 35mm — different wrist presence
At 44mm, the Promaster Sea Eco-Drive Diver has a bolder wrist presence compared to the PRX Powermatic 80 35mm at 35mm. Water resistance differs: 200m (20 ATM) ISO 6425 vs 100m (10 ATM).
Value & Cost of Ownership
Citizen sits in the lower tier
The Citizen Promaster Sea Eco-Drive Diver sits at $250–$500 and the Tissot PRX Powermatic 80 35mm at $500–$1,000. On the specs that outlast any price: the Promaster Sea Eco-Drive Diver uses Mineral Crystal with a standard reserve, against Sapphire Crystal and 80 Hours on the PRX Powermatic 80 35mm. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) ISO 6425 vs 100m (10 ATM)
The Promaster Sea Eco-Drive Diver is rated to 200m (20 ATM) ISO 6425 while the PRX Powermatic 80 35mm handles 100m (10 ATM). The Promaster Sea Eco-Drive Diver is better suited for water activities.
Our Verdict
Citizen
Promaster Sea Eco-Drive Diver
Choose the Citizen Promaster Sea Eco-Drive Diver if you prioritize Citizen Eco-Drive (Solar Quartz) engineering, Made in Japan craftsmanship, and 200m (20 ATM) ISO 6425 water resistance. At $250–$500, it delivers Eco-Drive Caliber E168 with solid power reserve.
Check Price on AmazonTissot
PRX Powermatic 80 35mm
Choose the Tissot PRX Powermatic 80 35mm if you value ETA/Tissot Automatic technology, Swiss Made heritage, and 35mm proportions. At $500–$1,000, the Automatic Powermatic 80 (Caliber 80.111) with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Promaster Sea Eco-Drive Diver and Tissot PRX Powermatic 80 35mm represent two distinct approaches to fine watchmaking — the Citizen bringing Made in Japan tradition while Tissot delivers Swiss Made engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Citizen Promaster Sea Eco-Drive Diver
Tag Heuer's chronograph meets Citizen's diver
Tag Heuer Carrera Chronograph vs Tissot PRX Powermatic 80 35mm
Tag Heuer's chronograph meets Tissot's timepiece
Tissot PRX Powermatic 80 vs Citizen Promaster Sea Eco-Drive Diver
Tissot's timepiece meets Citizen's diver
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.