Hamilton Intra-Matic Auto Chronograph vs Oris Aquis Date Calibre 400
Hamilton's chronograph meets Oris's diver
Quick Verdict
The Hamilton Intra-Matic Auto Chronograph ($2,500–$5,000) and Oris Aquis Date Calibre 400 ($2,500–$5,000) are closely matched timepieces at similar price points. The Intra-Matic Auto Chronograph emphasizes Valjoux-Based Automatic Chronograph engineering while the Aquis Date Calibre 400 focuses on Swiss Made craftsmanship.
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Specifications Compared
| Feature | Hamilton Intra-Matic Auto Chronograph | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | $2,500–$5,000 | $2,500–$5,000 |
| Case Size | 40mm | 41.5mm |
| Movement | Automatic H-31 | Automatic Calibre 400 |
| Caliber Type | Valjoux-Based Automatic Chronograph | Oris In-House Manufacture |
| Power Reserve | 60 Hours | 120 Hours (5 Days) |
| Water Resistance | 100m (10 ATM) | 300m (30 ATM) |
| Crystal | Sapphire (Domed) | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Hamilton's design language vs Oris's approach
The Hamilton Intra-Matic Auto Chronograph features a Stainless Steel case at 40mm with Sapphire (Domed) 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 H-31 vs Automatic Calibre 400
The Intra-Matic Auto Chronograph runs the Automatic H-31 (Valjoux-Based Automatic Chronograph, 60 Hours power reserve) at 28,800 vph (4 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
40mm vs 41.5mm — different wrist presence
At 40mm, the Intra-Matic Auto Chronograph wears more compactly on smaller wrists compared to the Aquis Date Calibre 400 at 41.5mm. Water resistance differs: 100m (10 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Hamilton Intra-Matic Auto Chronograph sits at $2,500–$5,000 and the Oris Aquis Date Calibre 400 at $2,500–$5,000. On the specs that outlast any price: the Intra-Matic Auto Chronograph uses Sapphire (Domed) with 60 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
100m (10 ATM) vs 300m (30 ATM)
The Intra-Matic Auto Chronograph is rated to 100m (10 ATM) while the Aquis Date Calibre 400 handles 300m (30 ATM). The Aquis Date Calibre 400 offers superior water resistance.
Materials Face-Off
| Component | Hamilton Intra-Matic Auto Chronograph | Oris Aquis Date Calibre 400 |
|---|---|---|
| Movement | Hamilton H-31 caliber | Oris Caliber 733 |
| Crystal | Domed sapphire ("box crystal" silhouette) | Domed sapphire with anti-reflective coating on inside |
| Case | Stainless steel 316L | Stainless steel 316L (brushed and polished) |
| Bezel | — | Unidirectional rotating, scratch-resistant ceramic insert with 60-min dive scale and lume pip |
Cost of Ownership Compared
The Oris Aquis Date Calibre 400 saves you $146 over 5 years of ownership
Who Should Pick Which
Pick the Hamilton Intra-Matic Auto Chronograph if…
- Active lifestyle wearers — 100m water resistance handles swimming and water sports
- Practical daily wearers — 60-hour reserve gives breathing room
- Those who prioritize scratch resistance — sapphire crystal
- Chronograph enthusiasts looking for a proven timing instrument
- Heritage enthusiasts drawn to ** Hamilton's historical pedigree
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
Hamilton Intra-Matic Auto Chronograph
- 14.6mm thickness honest but tall.
- Not column-wheel — cam-switching 7753 architecture.
- H-31 isn't in-house in the strict sense.
- Lume is modest.
Oris Aquis Date Calibre 400
- Sellita base movement at this price — 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
Hamilton
Intra-Matic Auto Chronograph
Choose the Hamilton Intra-Matic Auto Chronograph if you prioritize Valjoux-Based Automatic Chronograph engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $2,500–$5,000, it delivers Automatic H-31 with 60 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 Hamilton Intra-Matic Auto Chronograph and Oris Aquis Date Calibre 400 represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made 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.