Oris Aquis Date Calibre 400 vs Seiko Prospex Sea Solar SNE597
Two divers compared — $2,500–$5,000 vs $500–$1,000
Quick Verdict
The Seiko Prospex Sea Solar SNE597 ($500–$1,000) delivers Seiko Solar Quartz technology in the tier below the Oris Aquis Date Calibre 400 ($2,500–$5,000). The Prospex Sea Solar SNE597 measures 41.0mm (48.8mm lug-to-lug, 11.3mm thick) and is rated 200m Diver. The Aquis Date Calibre 400 justifies its premium with Swiss Made heritage and Automatic Calibre 400. Both represent excellent choices in the diver category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Oris Aquis Date Calibre 400 | Seiko Prospex Sea Solar SNE597 |
|---|---|---|
| Price | $2,500–$5,000 | $500–$1,000 |
| Case Size | 41.5mm | 41.0mm (48.8mm lug-to-lug, 11.3mm thick) |
| Movement | Automatic Calibre 400 | Solar Quartz |
| Caliber Type | Oris In-House Manufacture | Seiko Solar Quartz |
| Power Reserve | 120 Hours (5 Days) | — |
| Water Resistance | 300m (30 ATM) | 200m Diver |
| Crystal | Sapphire Crystal with Anti-Reflective Coating | Sapphire |
| Case Material | Stainless Steel | — |
| Origin | Swiss Made | Seiko (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Oris's design language vs Seiko's approach
The Oris Aquis Date Calibre 400 features a Stainless Steel case at 41.5mm with Sapphire Crystal with Anti-Reflective Coating protection. The Seiko Prospex Sea Solar SNE597 offers steel construction at 41.0mm (48.8mm lug-to-lug, 11.3mm thick) with Sapphire. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Calibre 400 vs Solar Quartz
The Aquis Date Calibre 400 runs the Automatic Calibre 400 (Oris In-House Manufacture, 120 Hours (5 Days) power reserve) at 28,800 vph (4 Hz) frequency. The Prospex Sea Solar SNE597 uses the Solar Quartz (Seiko Solar Quartz, standard reserve) at standard. The Aquis Date Calibre 400 edges ahead on power reserve.
Wearability & Fit
41.5mm vs 41.0mm (48.8mm lug-to-lug, 11.3mm thick) — different wrist presence
At 41.5mm, the Aquis Date Calibre 400 has a bolder wrist presence compared to the Prospex Sea Solar SNE597 at 41.0mm (48.8mm lug-to-lug, 11.3mm thick). Water resistance differs: 300m (30 ATM) vs 200m Diver.
Value & Cost of Ownership
Seiko sits in the lower tier
The Oris Aquis Date Calibre 400 sits at $2,500–$5,000 and the Seiko Prospex Sea Solar SNE597 at $500–$1,000. On the specs that outlast any price: the Aquis Date Calibre 400 uses Sapphire Crystal with Anti-Reflective Coating with 120 Hours (5 Days), against Sapphire and a standard reserve on the Prospex Sea Solar SNE597. Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 200m Diver
The Aquis Date Calibre 400 is rated to 300m (30 ATM) while the Prospex Sea Solar SNE597 handles 200m Diver. The Aquis Date Calibre 400 is better suited for water activities.
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 $2,500–$5,000, it delivers Automatic Calibre 400 with 120 Hours (5 Days) power reserve.
Check Price on AmazonSeiko
Prospex Sea Solar SNE597
Choose the Seiko Prospex Sea Solar SNE597 if you value Seiko Solar Quartz technology, Seiko (Japan) heritage, and 41.0mm (48.8mm lug-to-lug, 11.3mm thick) proportions. At $500–$1,000, the Solar Quartz with ample power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Seiko Prospex Sea Solar SNE597 represent two distinct approaches to the diver category — the Oris bringing Swiss Made tradition while Seiko delivers Seiko (Japan) engineering.
Frequently Asked Questions
More Comparisons
Explore These Watches
How This Page Was Made
Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.