Mido Ocean Star GMT vs Seiko Prospex Alpinist
Two divers compared — ~$1,410 vs ~$620
Quick Verdict
The Seiko Prospex Alpinist (~$620) delivers In-House Automatic Manufacture technology at $790 less than the Mido Ocean Star GMT (~$1,410). The Ocean Star GMT justifies its premium with Swiss Made heritage and Automatic Caliber 80 (Base ETA C07.661). Both represent excellent choices in the diver category.
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Specifications Compared
| Feature | Mido Ocean Star GMT | Seiko Prospex Alpinist |
|---|---|---|
| Price | ~$1,410 | ~$620 |
| Case Size | 44mm | 39.5mm |
| Movement | Automatic Caliber 80 (Base ETA C07.661) | Automatic Caliber 6R35 |
| Caliber Type | Automatic (ETA C07.661 base) | In-House Automatic Manufacture |
| Power Reserve | 80 Hours | 70 Hours |
| Water Resistance | 200m (20 ATM) | 200m (20 ATM) |
| Crystal | Sapphire with Double-sided AR | Sapphire with Cyclops |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Mido's design language vs Seiko's approach
Movement & Performance
Automatic Caliber 80 (Base ETA C07.661) vs Automatic Caliber 6R35
Wearability & Fit
44mm vs 39.5mm — different wrist presence
Value & Cost of Ownership
Seiko is $790 more affordable
Water Resistance
200m (20 ATM) vs 200m (20 ATM)
Our Verdict
Mido
Ocean Star GMT
Choose the Mido Ocean Star GMT if you prioritize Automatic (ETA C07.661 base) engineering, Swiss Made craftsmanship, and 200m (20 ATM) water resistance. At ~$1,410, it delivers Automatic Caliber 80 (Base ETA C07.661) 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 ~$620, the Automatic Caliber 6R35 with 70 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Mido Ocean Star GMT and Seiko Prospex Alpinist represent two distinct approaches to the diver category — the Mido bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.