Breitling Navitimer B01 vs Longines HydroConquest Automatic
Breitling's chronograph meets Longines's diver
Quick Verdict
The Longines HydroConquest Automatic ($1,500–$2,500) delivers ETA-Based Automatic with Silicon Balance Spring technology in the tier below the Breitling Navitimer B01 ($10,000–$25,000). The HydroConquest Automatic measures 41mm and is rated 300m (30 ATM). The Navitimer B01 justifies its premium with Swiss Made heritage and Automatic Breitling 01 (Manufacture). Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Breitling Navitimer B01 | Longines HydroConquest Automatic |
|---|---|---|
| Price | $10,000–$25,000 | $1,500–$2,500 |
| Case Size | 43mm | 41mm |
| Movement | Automatic Breitling 01 (Manufacture) | Automatic L888.5 |
| Caliber Type | In-House Automatic Chronograph Manufacture | ETA-Based Automatic with Silicon Balance Spring |
| Power Reserve | 70 Hours | 72 Hours |
| Water Resistance | 30m (3 ATM) | 300m (30 ATM) |
| Crystal | Cambered Sapphire | Sapphire with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Breitling's design language vs Longines's approach
The Breitling Navitimer B01 features a Stainless Steel case at 43mm with Cambered Sapphire protection. The Longines HydroConquest Automatic offers Stainless Steel construction at 41mm with Sapphire with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Breitling 01 (Manufacture) vs Automatic L888.5
The Navitimer B01 runs the Automatic Breitling 01 (Manufacture) (In-House Automatic Chronograph Manufacture, 70 Hours power reserve) at 28,800 vph (4 Hz) frequency. The HydroConquest Automatic uses the Automatic L888.5 (ETA-Based Automatic with Silicon Balance Spring, 72 Hours reserve) at 25,200 vph (3.5 Hz). The HydroConquest Automatic offers a longer power reserve.
Wearability & Fit
43mm vs 41mm — different wrist presence
At 43mm, the Navitimer B01 has a bolder wrist presence compared to the HydroConquest Automatic at 41mm. Water resistance differs: 30m (3 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Longines sits in the lower tier
The Breitling Navitimer B01 sits at $10,000–$25,000 and the Longines HydroConquest Automatic at $1,500–$2,500. On the specs that outlast any price: the Navitimer B01 uses Cambered Sapphire with 70 Hours, against Sapphire with Anti-Reflective Coating and 72 Hours on the HydroConquest Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 300m (30 ATM)
The Navitimer B01 is rated to 30m (3 ATM) while the HydroConquest Automatic handles 300m (30 ATM). The HydroConquest Automatic offers superior water resistance.
Materials Face-Off
| Component | Breitling Navitimer B01 | Longines HydroConquest Automatic |
|---|---|---|
| Case alloy | Stainless steel 316L — the industry-standard mid-range Swiss spec. | Zirconium oxide (ZrO₂) with engraved and paint-filled 60-minute dive scale Mohs 8.5 |
| Sapphire crystal | Synthetic corundum (Al₂O₃), grown via the Verneuil process for crystal blanks then formed into the cambered (domed) shape. Mohs hardness 9. Anti-refle Mohs 9 | Flat sapphire with anti-reflective coating on the underside Mohs 9 |
| Lume specification | Super-LumiNova on the hands and markers. Grade and glow duration are not published by the manufacturer for this reference, so neither is claimed here. | Si hairspring in the L888.5 caliber — introduced 2020 across the HydroConquest line |
| Bracelet alloy | Stainless steel 316L matching the case. | Brushed flanks with polished bevel edges — mixed finishing for visual depth |
| Super-LumiNova | — | Applied to sword-style hands and all hour indices |
Cost of Ownership Compared
The Longines HydroConquest Automatic saves you $7,879 over 5 years of ownership
Who Should Pick Which
Pick the Breitling Navitimer B01 if…
- Buyers wanting an in-house movement at the $9K price point
- Accuracy-minded buyers — COSC chronometer certification guarantees precision
- Weekend warriors — 70-hour power reserve means it survives two days off the wrist
- Those who prioritize scratch resistance — sapphire crystal
- Chronograph enthusiasts looking for a proven timing instrument
Pick the Longines HydroConquest Automatic if…
- Best-in-class 72-hour power reserve at sub-$2,000
- Silicon hairspring antimagnetic protection at an accessible price
- Swiss heritage enthusiasts — Longines' 1832 founding and Olympic/aviation history
- Legitimate 300m dive capability with everyday wearability
- Value seekers — at grey-market pricing the spec-per-dollar is nearly unbeatable
Breitling Navitimer B01
- 30m water resistance is the headline weakness. At the upper end of the $5,000–$10,000 band this is the most-criticised spec. The Navitimer is an aviation tool, not a water watch.
- Slide rule learning curve. Most owners never actually use the slide rule for in-flight calculation. Knowing how to operate it is a horological badge-of-honour, not a daily-driver feature.
- Dial visual density. The Navitimer dial is the watch's character, but it is also the most cluttered face in any luxury watch under $10k. People who want a clean dial will not love this watch.
- 43mm wears large. The 43mm case + 22mm lug width + cambered crystal pushes the visual presence above the spec. Try before you buy if you're under 6.75" wrist.
Longines HydroConquest Automatic
- ETA-base movement at this price — excellent but not "in-house" in the purist sense
- 21mm lug width — awkward for aftermarket straps (most are 20mm or 22mm)
- 25,200 vph (3.5 Hz) — seconds hand sweep is less smooth than 28,800 vph competitors
- Not COSC-certified — no chronometer guarantee (unlike Tudor or Omega at similar prices)
Our Verdict
Breitling
Navitimer B01
Choose the Breitling Navitimer B01 if you prioritize In-House Automatic Chronograph Manufacture engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $10,000–$25,000, it delivers Automatic Breitling 01 (Manufacture) with 70 Hours power reserve.
Check Price on AmazonLongines
HydroConquest Automatic
Choose the Longines HydroConquest Automatic if you value ETA-Based Automatic with Silicon Balance Spring technology, Swiss Made heritage, and 41mm proportions. At $1,500–$2,500, the Automatic L888.5 with 72 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Breitling Navitimer B01 and Longines HydroConquest Automatic represent two distinct approaches to fine watchmaking — the Breitling bringing Swiss Made tradition while Longines delivers Swiss Made engineering.
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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.