There are watches inspired by the sea, and then there are instruments shaped by the science that allows us to enter it. Bühlmann watches belong to the latter.
What defines the Decompression 02 is not only what it does, but what stands behind it, four independent collaborating bodies, each representing a fundamental dimension of decompression science:
Data
Practice
Research
Horological execution
Together, they form the foundation upon which a mechanical instrument can still have meaning today.
1. DAN Research Foundation - Data & Safety Standards
For decades, the DAN Research Foundation has been at the forefront of diving safety. Not in theory but in real-world data collection. Thousands of dives. Profiles. Incidents. Outcomes.
This is where decompression stops being abstract and becomes measurable. Through this collaboration, Bühlmann Watches connects to a living database of diving behaviour and risk.
A database that continues to evolve, just as decompression science and the algorithm does.
It is this link that ensures the watch is not a nostalgic object, but one anchored in modern safety understanding and that it evolves in its functionalities.
2. CMAS Switzerland - Field Testing & Practical Validation
Theory must survive reality and therefore our partner CMAS Switzerland brings the second pillar: use in the water.
Professional divers, instructors, and technical users evaluate not what sounds good, but what works under stress, cold, low visibility, and repetition.
A decompression instrument is only as good as its usability when conditions degrade.
Through CMAS, the Decompression 02 is tested where it matters most: in the dive itself.
3. European Underwater and Baromedical Society - Medical Research & Theoretical Advancement
If DAN observes and CMAS validates, EUBS asks the deeper question: What is still not fully understood?
Decompression is not a solved problem. It is an evolving field of physiology, probability, and risk. Through connections to the medical and scientific community represented by EUBS, Bühlmann remains linked to the ongoing theoretical work:
Microbubble formation
Individual susceptibility
Future personalized models
This is where the legacy of Dr. Albert A. Bühlmann continues, not as a fixed model, but as a living scientific trajectory.
4. Bühlmann Watches - Horological Executio
If science defines the principles, it is horology which gives them form.
At Bühlmann, data, field experience, and medical research are translated into a mechanical language, one that can be read, trusted, and used under pressure. This requires more than watchmaking. It requires interpretation.
Constraints become indications, complexity becomes clarity and science becomes something tangible.
The Decompression 02 is the result of this process: not an adaptation of an existing watch, but a purpose-built instrument, where every function exists to serve understanding.
Four Pillars. One responsibility.
Data through DAN, Reality through CMAS, Science through EUBS and Horological execution through Bühlmann Watches.
This is not marketing alignment, this is a structural approach and it is what allows Bühlmann to pursue a simple idea:
To make diving safer through a luxury mechanical object
The Decompression 02 is produced in a limited series of 575 pieces.
Each one is part of an ongoing effort to carry forward a legacy of Swiss decompression science into a new generation.