Seiko Prospex "Turtle" vs Tissot Seastar 1000 Automatic
Two divers compared — ~$500 vs ~$515
Quick Verdict
The Seiko Prospex "Turtle" (~$500) offers In-House Automatic Manufacture precision at $15 less than the Tissot Seastar 1000 Automatic (~$515). The Seastar 1000 Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective price points.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Seiko Prospex "Turtle" | Tissot Seastar 1000 Automatic |
|---|---|---|
| Price | ~$500 | ~$515 |
| Case Size | 45mm | 40mm |
| Movement | Automatic Caliber 4R36 | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | In-House Automatic Manufacture | ETA/Tissot Automatic |
| Power Reserve | 41 Hours | 80 Hours |
| Water Resistance | 200m (20 ATM) Diver | 300m (30 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Tissot's approach
Movement & Performance
Automatic Caliber 4R36 vs Automatic Powermatic 80 (Caliber 80.111)
Wearability & Fit
45mm vs 40mm — different wrist presence
Value & Cost of Ownership
Seiko is $15 more affordable
Water Resistance
200m (20 ATM) Diver vs 300m (30 ATM)
Our Verdict
Seiko
Prospex "Turtle"
Choose the Seiko Prospex "Turtle" if you prioritize In-House Automatic Manufacture engineering, Made in Japan craftsmanship, and 200m (20 ATM) Diver water resistance. At ~$500, it delivers Automatic Caliber 4R36 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 ~$515, 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 "Turtle" and Tissot Seastar 1000 Automatic represent two distinct approaches to the diver category — the Seiko bringing Made in Japan tradition while Tissot delivers Swiss Made engineering.