Orient Sun & Moon vs Oris Aquis Date Calibre 400
Orient's dress watch meets Oris's diver
Quick Verdict
The Orient Sun & Moon ($250–$500) offers Orient In-House Automatic (Hacking, Hand-Winding) precision in the tier below the Oris Aquis Date Calibre 400 ($2,500–$5,000). The Sun & Moon measures 41.5mm and is rated 50m (5 ATM). The Aquis Date Calibre 400 counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Orient Sun & Moon | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | $250–$500 | $2,500–$5,000 |
| Case Size | 41.5mm | 41.5mm |
| Movement | Automatic Caliber F6B24 | Automatic Calibre 400 |
| Caliber Type | Orient In-House Automatic (Hacking, Hand-Winding) | Oris In-House Manufacture |
| Power Reserve | 40 Hours | 120 Hours (5 Days) |
| Water Resistance | 50m (5 ATM) | 300m (30 ATM) |
| Crystal | Mineral Glass | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Orient's design language vs Oris's approach
The Orient Sun & Moon features a Stainless Steel case at 41.5mm with Mineral Glass protection. The Oris Aquis Date Calibre 400 offers Stainless Steel construction at 41.5mm with Sapphire Crystal with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber F6B24 vs Automatic Calibre 400
The Sun & Moon runs the Automatic Caliber F6B24 (Orient In-House Automatic (Hacking, Hand-Winding), 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Aquis Date Calibre 400 uses the Automatic Calibre 400 (Oris In-House Manufacture, 120 Hours (5 Days) reserve) at 28,800 vph (4 Hz). The Aquis Date Calibre 400 offers a longer power reserve.
Wearability & Fit
41.5mm vs 41.5mm — different wrist presence
At 41.5mm, the Sun & Moon is similarly sized compared to the Aquis Date Calibre 400 at 41.5mm. Water resistance differs: 50m (5 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Orient Sun & Moon sits at $250–$500 and the Oris Aquis Date Calibre 400 at $2,500–$5,000. On the specs that outlast any price: the Sun & Moon uses Mineral Glass with 40 Hours, against Sapphire Crystal with Anti-Reflective Coating and 120 Hours (5 Days) on the Aquis Date Calibre 400. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 300m (30 ATM)
The Sun & Moon is rated to 50m (5 ATM) while the Aquis Date Calibre 400 handles 300m (30 ATM). The Aquis Date Calibre 400 offers superior water resistance.
Our Verdict
Orient
Sun & Moon
Choose the Orient Sun & Moon if you prioritize Orient In-House Automatic (Hacking, Hand-Winding) engineering, Made in Japan craftsmanship, and 50m (5 ATM) water resistance. At $250–$500, it delivers Automatic Caliber F6B24 with 40 Hours power reserve.
Check Price on AmazonOris
Aquis Date Calibre 400
Choose the Oris Aquis Date Calibre 400 if you value Oris In-House Manufacture technology, Swiss Made heritage, and 41.5mm proportions. At $2,500–$5,000, the Automatic Calibre 400 with 120 Hours (5 Days) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Orient Sun & Moon and Oris Aquis Date Calibre 400 represent two distinct approaches to fine watchmaking — the Orient bringing Made in Japan tradition while Oris delivers Swiss Made engineering.
Frequently Asked Questions
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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.