If you are actively choosing between these two chronographs today, the decision comes down to a single daily trade-off. The Omega Speedmaster Professional demands a manual-winding habit and offers 50 meters of water resistance. The Breitling Navitimer B01 runs automatically but lands a 43 mm case with a busy slide-rule dial that can feel oversized on smaller wrists. Neither is a one-size-fits-all purchase. After reading the comparison below, you should be able to shortlist one watch and schedule a try-on to confirm fit and comfort before buying.
Comparison Framework
The core specifications below highlight where each watch excels and where it compromises. Pay close attention to the movement type and case dimensions—those two fields alone will decide most of the daily interaction you have with the watch.
| Feature | Omega Speedmaster Professional (3861) | Breitling Navitimer B01 (43 mm) |
|---|---|---|
| Movement | Manual-wind Co-Axial Master Chronometer 3861 | Automatic Breitling Manufacture Caliber 01 |
| Water resistance | 50 m (splash and hand-washing only) | 30 m (surface splash only) |
| Case diameter | 42 mm | 43 mm |
| Lug-to-lug | 48 mm | 50 mm |
| Thickness | 13.2 mm | 15.1 mm |
| Crystal | Hesalite (standard) or sapphire (optional) | Domed sapphire with anti-reflective coating |
| Power reserve | 50 hours | 70 hours |
| Strap options | Bracelet, leather, NATO | Bracelet, leather |
| Approximate retail | ~$7,000–$7,500 | ~$8,500–$9,000 |
| Key complication | Chronograph with small seconds | Chronograph + bidirectional slide-rule bezel |
Prices are MSRP estimates. Actual market prices vary. Always confirm with an authorized dealer before purchasing.
So what does this mean for your next move? If you can live with daily winding and prefer a smaller, lighter case, the Speedmaster is the safer pick. If you want an automatic that packs a pilot tool and you have a wrist circumference of 7 inches or more, the Navitimer wins. If neither condition feels certain, you should try on both models at an authorized dealer before committing.
Trade-offs to Know
Two specific failure modes routinely catch buyers after purchase. Knowing how to detect them early prevents a costly re-sale.
The Speedmaster Manual-Wind Surprise
The Speedmaster stops if you skip a day of winding. Owners who expect to grab a ready-to-wear watch every morning are often frustrated. The lack of a date window also forces a separate calendar check. The 42 mm case wears comfortably on most wrists, but the crown can dig into the back of the hand during push-ups or when wearing a tight cuff.
How to detect this early: Wear any manual-wind watch for seven consecutive days. Set a reminder to wind it each morning. If you miss winding twice in that week, the Speedmaster’s daily requirement will likely become a nuisance. A better alternative in that case is the Omega Speedmaster Racing (automatic) or an automatic chronograph like the Tudor Black Bay Chrono.
The Navitimer Busy-Dial Trap
The Navitimer’s slide-rule bezel adds significant visual clutter. At a quick glance, reading the time takes slightly longer than on a cleaner dial like the Speedmaster’s. The 43 mm case and 15 mm thickness create a substantial presence under a dress shirt cuff. Owners with wrists under 7 inches report the watch feels top-heavy and prone to tilting off-center, especially on leather straps that don’t lock the case down.
How to detect this early: Visit a Breitling boutique or an authorized dealer and ask to try the Navitimer B01 on a leather strap for a full 24-hour loan. Many boutiques offer extended try-ons for serious buyers. Wear it with the button-down shirt you normally wear to the office. If you feel the bezel catching on your cuff more than three times in a day, or if the watch slides off the top of your wrist when you bend your hand back, the proportions will become a persistent annoyance.
Resale and Service Costs
The Speedmaster holds value well due to its moon-watch pedigree, but service intervals land every 5 to 8 years, and a full mechanical service from Omega typically runs $800 to $1,000. The Navitimer’s Caliber 01 is robust and easier to regulate, but service costs are similar, and parts availability can lag for older references. Both watches depreciate slightly until they become collectible, but the Speedmaster historically maintains a tighter resale floor. If you plan to sell within five years, the Speedmaster is the safer investment.
Best-Fit Picks by Use Case
For the Space-History Enthusiast or Heritage Collector
Choose the Omega Speedmaster Professional. The manual-wind 3861 is the direct descendant of the watch worn on the moon. It offers a clear, uncluttered dial and a slim enough profile to slide under a jacket. The 50 m water resistance is adequate for hand-washing and rain but not for swimming. If you can tolerate daily winding, this is the emotionally resonant pick.
For the Aviation Professional or Slide-Rule Fan
The Breitling Navitimer B01 is purpose-built for pilots. Its circular slide rule allows you to calculate fuel consumption, speed, and conversion factors on the fly. The automatic movement means you can slip it on without winding every day. The thick case and 30 m water resistance limit it to cockpit and boardroom use, not the beach or pool.
For the Everyday Chronograph Buyer Who Wants a Single Watch
Neither watch is ideal for this role. The Speedmaster demands manual winding; the Navitimer is bulky and flashy for some tastes. If you must pick one, the Speedmaster’s lower profile and lower price make it slightly more wearable as a daily companion. However, a third option such as the Omega Speedmaster Racing (automatic) or a Breitling Chronomat may serve the one-watch role better.
For the Collector Focused on Mechanical Integrity
The Breitling Caliber 01 is one of the most reliable column-wheel chronographs in production, offering a 70-hour power reserve and a smooth winding rotor. The Speedmaster’s 3861 is also a fine movement, but its co-axial escapement requires careful servicing. If you dislike manual winding, the Navitimer wins on movement convenience alone.
Frequently Asked Questions
Which watch is more accurate?
Both are COSC-certified chronometers. The Speedmaster 3861 is also METAS-certified, meaning it passes additional tests for magnetic resistance and precision in six positions. In real-world wear, the difference is negligible. Both typically run within ±2 to +5 seconds per day.
Which has better water resistance?
The Speedmaster is rated to 50 meters, and the Navitimer is rated to 30 meters. Neither is a dive watch. The Speedmaster can handle occasional rain and hand-washing. The Navitimer should be kept away from submersion altogether. If water exposure is a likely scenario, consider a Seamaster or a Tudor Black Bay instead.
Which holds its value better?
The Speedmaster historically retains a higher percentage of its retail price, especially the Hesalite-crystal reference, due to its moon-watch cachet and strong community demand. The Navitimer also holds value reasonably well, but its larger case size and reliance on a niche pilot aesthetic can make it harder to resell quickly. Pre-owned values depend heavily on condition and box/papers.
The We Know Watches editorial team brings together over 40 years of combined watch collecting, trading, and repair experience. Our editors have owned and handled watches from every major brand — from entry-level Seiko 5s to Rolex, Omega, Patek Philippe, and independent Swiss watchmakers. We’ve bought and sold at auction, worked with authorized dealers, visited manufacturing facilities in Switzerland and Japan, and serviced hundreds of movements ranging from the Seiko 7S26 to the Longines L888. Every guide and review we publish is based on hands-on experience, original research, and consultation with professional watchmakers. We do not accept payment for reviews, and we clearly disclose when we use affiliate links.