Seiko Prospex Samurai SRPF03 vs Tissot Seastar 1000 Automatic
Two divers compared — $250–$500 vs $500–$1,000
Quick Verdict
The Seiko Prospex Samurai SRPF03 ($250–$500) offers Seiko Automatic, hand-winding and hacking precision in the tier below the Tissot Seastar 1000 Automatic ($500–$1,000). The Prospex Samurai SRPF03 measures 43.8mm and is rated 200m (20 ATM). The Seastar 1000 Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective tiers.
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Specifications Compared
| Feature | Seiko Prospex Samurai SRPF03 | Tissot Seastar 1000 Automatic |
|---|---|---|
| Price | $250–$500 | $500–$1,000 |
| Case Size | 43.8mm | 40mm |
| Movement | Automatic Caliber 4R35 | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | Seiko Automatic, hand-winding and hacking | ETA/Tissot Automatic |
| Power Reserve | 41 Hours | 80 Hours |
| Water Resistance | 200m (20 ATM) | 300m (30 ATM) |
| Crystal | Hardlex Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Tissot's approach
The Seiko Prospex Samurai SRPF03 features a Stainless Steel case at 43.8mm with Hardlex Crystal protection. The Tissot Seastar 1000 Automatic offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 4R35 vs Automatic Powermatic 80 (Caliber 80.111)
The Prospex Samurai SRPF03 runs the Automatic Caliber 4R35 (Seiko Automatic, hand-winding and hacking, 41 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Seastar 1000 Automatic uses the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours reserve) at 21,600 vph (3 Hz). The Seastar 1000 Automatic offers a longer power reserve.
Wearability & Fit
43.8mm vs 40mm — different wrist presence
At 43.8mm, the Prospex Samurai SRPF03 has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 200m (20 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Seiko sits in the lower tier
The Seiko Prospex Samurai SRPF03 sits at $250–$500 and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Prospex Samurai SRPF03 uses Hardlex Crystal with 41 Hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 300m (30 ATM)
The Prospex Samurai SRPF03 is rated to 200m (20 ATM) while the Seastar 1000 Automatic handles 300m (30 ATM). The Seastar 1000 Automatic offers superior water resistance.
Our Verdict
Seiko
Prospex Samurai SRPF03
Choose the Seiko Prospex Samurai SRPF03 if you prioritize Seiko Automatic, hand-winding and hacking engineering, Japanese Movement craftsmanship, and 200m (20 ATM) water resistance. At $250–$500, it delivers Automatic Caliber 4R35 with 41 Hours power reserve.
Check Price on AmazonTissot
Seastar 1000 Automatic
Choose the Tissot Seastar 1000 Automatic if you value ETA/Tissot Automatic technology, Swiss Made heritage, and 40mm 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 Seiko Prospex Samurai SRPF03 and Tissot Seastar 1000 Automatic represent two distinct approaches to the diver category — the Seiko bringing Japanese Movement tradition while Tissot 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.