Oris Aquis Date Calibre 400 vs Rado Captain Cook High-Tech Ceramic
Two divers compared — $2,500–$5,000 vs $1,500–$2,500
Quick Verdict
The Rado Captain Cook High-Tech Ceramic ($1,500–$2,500) delivers Automatic (ETA C07.611 base) technology in the tier below the Oris Aquis Date Calibre 400 ($2,500–$5,000). The Captain Cook High-Tech Ceramic measures 43mm and is rated 300m (30 ATM). The Aquis Date Calibre 400 justifies its premium with Swiss Made heritage and Automatic Calibre 400. Both represent excellent choices in the diver category.
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Specifications Compared
| Feature | Oris Aquis Date Calibre 400 | Rado Captain Cook High-Tech Ceramic |
|---|---|---|
| Price | $2,500–$5,000 | $1,500–$2,500 |
| Case Size | 41.5mm | 43mm |
| Movement | Automatic Calibre 400 | Automatic Calibre R734 |
| Caliber Type | Oris In-House Manufacture | Automatic (ETA C07.611 base) |
| Power Reserve | 120 Hours (5 Days) | 80 Hours |
| Water Resistance | 300m (30 ATM) | 300m (30 ATM) |
| Crystal | Sapphire Crystal with Anti-Reflective Coating | Box-shaped Sapphire |
| Case Material | Stainless Steel | High-Tech Ceramic |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Oris's design language vs Rado'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 Rado Captain Cook High-Tech Ceramic offers High-Tech Ceramic construction at 43mm with Box-shaped Sapphire. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Calibre 400 vs Automatic Calibre R734
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 Captain Cook High-Tech Ceramic uses the Automatic Calibre R734 (Automatic (ETA C07.611 base), 80 Hours reserve) at 21,600 vph (3 Hz). The Aquis Date Calibre 400 edges ahead on power reserve.
Wearability & Fit
41.5mm vs 43mm — different wrist presence
At 41.5mm, the Aquis Date Calibre 400 wears more compactly on smaller wrists compared to the Captain Cook High-Tech Ceramic at 43mm. Water resistance differs: 300m (30 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Rado sits in the lower tier
The Oris Aquis Date Calibre 400 sits at $2,500–$5,000 and the Rado Captain Cook High-Tech Ceramic at $1,500–$2,500. 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 Box-shaped Sapphire and 80 Hours on the Captain Cook High-Tech Ceramic. Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 300m (30 ATM)
The Aquis Date Calibre 400 is rated to 300m (30 ATM) while the Captain Cook High-Tech Ceramic handles 300m (30 ATM). Both offer identical water resistance ratings.
Materials Face-Off
| Component | Oris Aquis Date Calibre 400 | Rado Captain Cook High-Tech Ceramic |
|---|---|---|
| Movement | Oris Caliber 733 | High-Tech Ceramic (Zirconium oxide / ZrO₂ based). Sintered at ~1,450°C. Mohs hardness ~8.5–9. Virtually scratchproof — only diamond and sapphire can |
| Crystal | Domed sapphire with anti-reflective coating on inside | While ceramic is extremely scratch-resistant, it is brittle — sharp impacts, drops on hard surfaces, or concentrated point loads can cause cracking o |
| Case | Stainless steel 316L (brushed and polished) | Box-shaped sapphire (Mohs 9) with anti-reflective coating — vintage-inspired domed profile. Mohs 9 |
| Bezel | Unidirectional rotating, scratch-resistant ceramic insert with 60-min dive scale and lume pip | Ceramic — matches the case material for visual and tactile consistency. |
| Bracelet | — | Ceramic links (matching case) — articulated three-link design. Significantly lighter than steel bracelets. |
Cost of Ownership Compared
The Rado Captain Cook High-Tech Ceramic saves you $165 over 5 years of ownership
Who Should Pick Which
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
Pick the Rado Captain Cook High-Tech Ceramic if…
- Dive watch enthusiasts — 300m water resistance is proper dive spec
- Weekend warriors — 80-hour power reserve means it survives two days off the wrist
- Those who prioritize scratch resistance — sapphire crystal
- Dive watch collectors who appreciate proper ISO-rated tool watches
- Heritage enthusiasts drawn to ** Rado's historical pedigree
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.
Rado Captain Cook High-Tech Ceramic
- Ceramic is brittle — drops/sharp impacts can crack the case. Full case replacement, not repair.
- 15.4mm thickness — chunky; won't slide under dress cuffs.
- Skeleton dial is polarizing — many prefer a traditional solid dial.
- ETA C07 base movement at this price — you're paying for the ceramic, not the movement.
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 AmazonRado
Captain Cook High-Tech Ceramic
Choose the Rado Captain Cook High-Tech Ceramic if you value Automatic (ETA C07.611 base) technology, Swiss Made heritage, and 43mm proportions. At $1,500–$2,500, the Automatic Calibre R734 with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Rado Captain Cook High-Tech Ceramic represent two distinct approaches to the diver category — the Oris bringing Swiss Made tradition while Rado delivers Swiss Made engineering.
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