Mido Ocean Star GMT vs Seiko 5 Sports GMT SSK001
Mido's diver meets Seiko's GMT watch
Quick Verdict
The Seiko 5 Sports GMT SSK001 (~$495) delivers Seiko In-House Automatic GMT technology at $915 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 luxury watch category.
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Specifications Compared
| Feature | Mido Ocean Star GMT | Seiko 5 Sports GMT SSK001 |
|---|---|---|
| Price | ~$1,410 | ~$495 |
| Case Size | 44mm | 42.5mm |
| Movement | Automatic Caliber 80 (Base ETA C07.661) | Automatic Caliber 4R34 (True GMT) |
| Caliber Type | Automatic (ETA C07.661 base) | Seiko In-House Automatic GMT |
| Power Reserve | 80 Hours | 41 Hours |
| Water Resistance | 200m (20 ATM) | 100m (10 ATM) |
| Crystal | Sapphire with Double-sided AR | Hardlex Crystal |
| 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 4R34 (True GMT)
Wearability & Fit
44mm vs 42.5mm — different wrist presence
Value & Cost of Ownership
Seiko is $915 more affordable
Water Resistance
200m (20 ATM) vs 100m (10 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
5 Sports GMT SSK001
Choose the Seiko 5 Sports GMT SSK001 if you value Seiko In-House Automatic GMT technology, Made in Japan heritage, and 42.5mm proportions. At ~$495, the Automatic Caliber 4R34 (True GMT) with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Mido Ocean Star GMT and Seiko 5 Sports GMT SSK001 represent two distinct approaches to fine watchmaking — the Mido bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.