Oris Aquis Date Calibre 400 vs Seiko Presage SSA425 Open Heart
Oris's diver meets Seiko's timepiece
Quick Verdict
The Seiko Presage SSA425 Open Heart (~$460) delivers Seiko In-House Automatic technology at $2,135 less than the Oris Aquis Date Calibre 400 (~$2,595). The Aquis Date Calibre 400 justifies its premium with Swiss Made heritage and Automatic Calibre 400. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Oris Aquis Date Calibre 400 | Seiko Presage SSA425 Open Heart |
|---|---|---|
| Price | ~$2,595 | ~$460 |
| Case Size | 41.5mm | 40.5mm |
| Movement | Automatic Calibre 400 | Automatic Caliber 4R38 |
| Caliber Type | Oris In-House Manufacture | Seiko In-House Automatic |
| Power Reserve | 120 Hours (5 Days) | 41 Hours |
| Water Resistance | 300m (30 ATM) | 50m (5 ATM) |
| Crystal | Sapphire Crystal with Anti-Reflective Coating | Hardlex Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Oris's design language vs Seiko's approach
Movement & Performance
Automatic Calibre 400 vs Automatic Caliber 4R38
Wearability & Fit
41.5mm vs 40.5mm — different wrist presence
Value & Cost of Ownership
Seiko is $2,135 more affordable
Water Resistance
300m (30 ATM) vs 50m (5 ATM)
Our Verdict
Oris
Aquis Date Calibre 400
Choose the Oris Aquis Date Calibre 400 if you prioritize Oris In-House Manufacture engineering, Swiss Made craftsmanship, and 300m (30 ATM) water resistance. At ~$2,595, it delivers Automatic Calibre 400 with 120 Hours (5 Days) power reserve.
Check Price on AmazonSeiko
Presage SSA425 Open Heart
Choose the Seiko Presage SSA425 Open Heart if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At ~$460, the Automatic Caliber 4R38 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Seiko Presage SSA425 Open Heart represent two distinct approaches to fine watchmaking — the Oris bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.