Frederique Constant Slimline Moonphase Manufacture vs Oris Aquis Date Calibre 400
Frederique Constant's dress watch meets Oris's diver
Quick Verdict
The Oris Aquis Date Calibre 400 (~$2,595) delivers Oris In-House Manufacture technology at $1,705 less than the Frederique Constant Slimline Moonphase Manufacture (~$4,300). The Slimline Moonphase Manufacture justifies its premium with Swiss Made heritage and Automatic FC-705 (In-House). Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Frederique Constant Slimline Moonphase Manufacture | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | ~$4,300 | ~$2,595 |
| Case Size | 42mm | 41.5mm |
| Movement | Automatic FC-705 (In-House) | Automatic Calibre 400 |
| Caliber Type | In-House Automatic Manufacture | Oris In-House Manufacture |
| Power Reserve | 42 Hours | 120 Hours (5 Days) |
| Water Resistance | 30m (3 ATM) | 300m (30 ATM) |
| Crystal | Convex Sapphire | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Frederique Constant's design language vs Oris's approach
Movement & Performance
Automatic FC-705 (In-House) vs Automatic Calibre 400
Wearability & Fit
42mm vs 41.5mm — different wrist presence
Value & Cost of Ownership
Oris is $1,705 more affordable
Water Resistance
30m (3 ATM) vs 300m (30 ATM)
Materials Face-Off
| Component | Frederique Constant Slimline Moonphase Manufacture | Oris Aquis Date Calibre 400 |
|---|---|---|
| Case alloy | Stainless steel 316L (standard mid-range Swiss spec) | Oris Caliber 733 |
| Crystal | Synthetic sapphire grown via Verneuil process, Mohs 9, convex (domed) profile, anti-reflective coating Mohs 9 | Domed sapphire with anti-reflective coating on inside |
| Lume specification | None (dress watch by design) | Stainless steel 316L (brushed and polished) |
| Dial finishing | Silver lacquer with applied indices and printed moonphase graphic + pointer date scale | Unidirectional rotating, scratch-resistant ceramic insert with 60-min dive scale and lume pip |
| Strap | Black or brown calfskin leather with signed Frederique Constant buckle | — |
Cost of Ownership Compared
The Oris Aquis Date Calibre 400 saves you $2,250 over 5 years of ownership
Who Should Pick Which
Pick the Frederique Constant Slimline Moonphase Manufacture if…
- Those who prioritize scratch resistance — sapphire crystal
- Dress watch seekers who want understated elegance
Pick the Oris Aquis Date Calibre 400 if…
- Dive watch enthusiasts — 300m water resistance is proper dive spec
- Those who prioritize scratch resistance — sapphire crystal
- Dive watch collectors who appreciate proper ISO-rated tool watches
- Buyers who prefer a commanding wrist presence — 43mm case
Frederique Constant Slimline Moonphase Manufacture
- Brand recognition below heritage Swiss brands — Longines (1832), Omega, Tudor have stronger name recognition. FC (1988 founding) is a younger brand without the same cultural footprint despite genuine in-house horological credentials
- 42mm wears large for traditional dress watch — modern preference is often 38–40mm for dress; 42mm + slim bezel pushes visual presence larger
- 21mm lug width awkward for aftermarket strap fitment
- 30m WR limits to pure dress use — no swimming, no shower
Oris Aquis Date Calibre 400
- Sellita base movement at $2,300 — fair value but not in-house prestige (Caliber 400 variants resolve).
- 43.5mm large for smaller wrists (smaller variants available).
- Proprietary endlinks limit strap options.
Our Verdict
Frederique Constant
Slimline Moonphase Manufacture
Choose the Frederique Constant Slimline Moonphase Manufacture if you prioritize In-House Automatic Manufacture engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At ~$4,300, it delivers Automatic FC-705 (In-House) with 42 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 ~$2,595, the Automatic Calibre 400 with 120 Hours (5 Days) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Frederique Constant Slimline Moonphase Manufacture and Oris Aquis Date Calibre 400 represent two distinct approaches to fine watchmaking — the Frederique Constant bringing Swiss Made tradition while Oris delivers Swiss Made engineering.
Frequently Asked Questions
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