Oris Aquis Date Calibre 400 vs Seiko 5 Sports 5KX
Oris's diver meets Seiko's timepiece
Quick Verdict
The Seiko 5 Sports 5KX (~$285) delivers Seiko In-House Automatic technology at $2,310 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 5 Sports 5KX |
|---|---|---|
| Price | ~$2,595 | ~$285 |
| Case Size | 41.5mm | 42.5mm |
| Movement | Automatic Calibre 400 | Automatic Caliber 4R36 |
| Caliber Type | Oris In-House Manufacture | Seiko In-House Automatic |
| Power Reserve | 120 Hours (5 Days) | 41 Hours |
| Water Resistance | 300m (30 ATM) | 100m (10 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 4R36
Wearability & Fit
41.5mm vs 42.5mm — different wrist presence
Value & Cost of Ownership
Seiko is $2,310 more affordable
Water Resistance
300m (30 ATM) vs 100m (10 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
5 Sports 5KX
Choose the Seiko 5 Sports 5KX if you value Seiko In-House Automatic technology, Made in Japan heritage, and 42.5mm proportions. At ~$285, the Automatic Caliber 4R36 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Seiko 5 Sports 5KX represent two distinct approaches to fine watchmaking — the Oris bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.