Oris Aquis Date Calibre 400 vs Tag Heuer Aquaracer Professional 300
Two divers compared — ~$2,595 vs ~$3,350
Quick Verdict
The Oris Aquis Date Calibre 400 (~$2,595) offers Oris In-House Manufacture precision at $755 less than the Tag Heuer Aquaracer Professional 300 (~$3,350). The Aquaracer Professional 300 counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective price points.
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Specifications Compared
| Feature | Oris Aquis Date Calibre 400 | Tag Heuer Aquaracer Professional 300 |
|---|---|---|
| Price | ~$2,595 | ~$3,350 |
| Case Size | 41.5mm | 43mm |
| Movement | Automatic Calibre 400 | Automatic Caliber 5 |
| Caliber Type | Oris In-House Manufacture | Automatic (ETA 2824-2 / Sellita SW200 base) |
| Power Reserve | 120 Hours (5 Days) | 38 Hours |
| Water Resistance | 300m (30 ATM) | 300m (30 ATM) |
| Crystal | Sapphire Crystal with Anti-Reflective Coating | Sapphire with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Oris's design language vs Tag Heuer's approach
Movement & Performance
Automatic Calibre 400 vs Automatic Caliber 5
Wearability & Fit
41.5mm vs 43mm — different wrist presence
Value & Cost of Ownership
Oris is $755 more affordable
Water Resistance
300m (30 ATM) vs 300m (30 ATM)
Materials Face-Off
| Component | Oris Aquis Date Calibre 400 | Tag Heuer Aquaracer Professional 300 |
|---|---|---|
| Movement | Oris Caliber 733 | Stainless steel 316L (medical-grade, with composition Cr 16–18%, Ni 10–14%, Mo 2–3%). Standard mid-range Swiss spec. Not 904L (Rolex Oystersteel) or G |
| Crystal | Domed sapphire with anti-reflective coating on inside | Ceramic (zirconia-based ZrO₂) — virtually scratchproof (Mohs ~9), color-stable under UV exposure. The ceramic is sintered, then engraved with dive sc |
| Case | Stainless steel 316L (brushed and polished) | Synthetic sapphire (Al₂O₃) grown via the Verneuil process, Mohs 9. Anti-reflective coating on interior surface only. Cyclops magnifier above date wind Mohs 9 |
| Bezel | Unidirectional rotating, scratch-resistant ceramic insert with 60-min dive scale and lume pip | Super-LumiNova grade BGW9 (blue-emission) on hands and indices. Glow duration approximately 6 hours after full charge. |
| Bracelet alloy | — | Stainless steel 316L matching the case. |
Cost of Ownership Compared
The Oris Aquis Date Calibre 400 saves you $1,021 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 Tag Heuer Aquaracer Professional 300 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
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.
Tag Heuer Aquaracer Professional 300
- Sellita SW200-1 base at $3,250 retail — many enthusiasts feel TAG Heuer charges a brand premium that the movement doesn't justify (Hamilton Khaki Field with similar movement architecture retails ~$700). The Aquaracer's price reflects brand positioning rather than movement engineering.
- 38-hour power reserve — modest by 2026 standards where peers (Tudor MT5402: 70h, Longines L888.5: 72h, ETA C07/H-10: 80h) offer significantly more reserve.
- 21mm lug width — unusual width limits aftermarket strap compatibility.
- Cyclops magnifier — polarising design element; some buyers love it, others find it dated.
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 AmazonTag Heuer
Aquaracer Professional 300
Choose the Tag Heuer Aquaracer Professional 300 if you value Automatic (ETA 2824-2 / Sellita SW200 base) technology, Swiss Made heritage, and 43mm proportions. At ~$3,350, the Automatic Caliber 5 with 38 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Oris Aquis Date Calibre 400 and Tag Heuer Aquaracer Professional 300 represent two distinct approaches to the diver category — the Oris bringing Swiss Made tradition while Tag Heuer delivers Swiss Made engineering.
Frequently Asked Questions
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