Oris Aquis Date Calibre 400 vs Rado True Square Automatic
Oris's diver meets Rado's timepiece
Quick Verdict
The Rado True Square Automatic (~$2,450) delivers Powermatic 80 (ETA-Based) technology at $145 less than the Oris Aquis Date Calibre 400 (~$2,595). The Aquis Date Calibre 400 justifies its premium with Swiss Made heritage and Automatic Calibre 400. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Oris Aquis Date Calibre 400 | Rado True Square Automatic |
|---|---|---|
| Price | ~$2,595 | ~$2,450 |
| Case Size | 41.5mm | 38mm (Square) |
| Movement | Automatic Calibre 400 | Automatic ETA C07.611 |
| Caliber Type | Oris In-House Manufacture | Powermatic 80 (ETA-Based) |
| Power Reserve | 120 Hours (5 Days) | 80 Hours |
| Water Resistance | 300m (30 ATM) | 50m (5 ATM) |
| Crystal | Sapphire Crystal with Anti-Reflective Coating | Sapphire (Anti-Reflective) |
| Case Material | Stainless Steel | Monobloc High-Tech Ceramic |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Oris's design language vs Rado's approach
Movement & Performance
Automatic Calibre 400 vs Automatic ETA C07.611
Wearability & Fit
41.5mm vs 38mm (Square) — different wrist presence
Value & Cost of Ownership
Rado is $145 more affordable
Water Resistance
300m (30 ATM) vs 50m (5 ATM)
Materials Face-Off
| Component | Oris Aquis Date Calibre 400 | Rado True Square Automatic |
|---|---|---|
| Movement | Oris Caliber 733 | Rado's proprietary zirconium dioxide (ZrO₂) ceramic, fired at temperatures higher than standard ceramic to produce a more scratch-resistant material w |
| Crystal | Domed sapphire with anti-reflective coating on inside | ceramic enriched with carbon during a plasma-treatment phase at 20,000°C, resulting in a sheen that is more metallic. Owners describe the appearance a |
| Case | Stainless steel 316L (brushed and polished) | Sapphire (Al₂O₃) grown via Verneuil process, Mohs 9, with anti-reflective coating. Mohs 9 |
| Bezel | Unidirectional rotating, scratch-resistant ceramic insert with 60-min dive scale and lume pip | Super-LumiNova (variable by dial variant). |
| Bracelet | — | Monobloc ceramic matching the case, with titanium clasp components. |
Cost of Ownership Compared
The Rado True Square Automatic saves you $215 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 True Square Automatic if…
- Weekend warriors — 80-hour power reserve means it survives two days off the wrist
- Those who prioritize scratch resistance — sapphire crystal
- Dress watch seekers who want understated elegance
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.
Rado True Square Automatic
- Ceramic brittleness — virtually scratchproof but can crack/shatter under hard impacts. WatchUSeek Rado threads document multiple owner reports of ceramic cracking from drops that would only scratch steel cases. Insurance is recommended.
- Square format polarising — distinctive and modernist, but not for buyers who want traditional round cases.
- 50m water resistance — dress watch only; not for swimming sports or hard activity.
- Proprietary endlinks — severely limits aftermarket strap options.
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 ~$2,595, it delivers Automatic Calibre 400 with 120 Hours (5 Days) power reserve.
Check Price on AmazonRado
True Square Automatic
Choose the Rado True Square Automatic if you value Powermatic 80 (ETA-Based) technology, Swiss Made heritage, and 38mm (Square) proportions. At ~$2,450, the Automatic ETA C07.611 with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Rado True Square Automatic represent two distinct approaches to fine watchmaking — the Oris bringing Swiss Made tradition while Rado delivers Swiss Made engineering.