I first found out about the CB01 after the initial offering had just sold out. As the release date grew closer and production pictures started making their way to the internet, my sadness only grew as I was increasingly enamored with this timepiece.

After posting in this forum looking for anyone who might have had a change of heart and wanted to re-home their CB01, I was surprised and delighted to be contacted directly by Guido Benedini who delivered the best news — there was a possibility of a few more pieces being available! …


See how the innovative decompression security stops bezel works. It allows you to unlock or lock the screw-in crowns and the screw-in helium valve.

The Bühlmann Decompression 01 is in pre-sale on Watch Angels https://watchangels.ch/buehlmann-watches/


The record dive to 575m — test n° 373

In test №373 from January 28 to February 5, 1981, the record depth of 575m was reached in the Hyperbaric chamber of the University Hospital of Zurich.

By changing the procedure in the compression phase, the effects of the “High Pressure Nervous Syndrome” could be alleviated.

Soon after this record it became apparent that deep diving had reached its limits, even if the research laboratories in Germany, France and the USA were to reach even greater depths in the years to come. These tests were no longer relevant in practice.

Professional deep diving was time-consuming, expensive and not…


As reported in episode 5 of the Bühlmann story , the old hyperbaric chamber of the University of Zurich, built in 1963, met the requirements for a modern laboratory less and less. The diving depth was limited to 300 meters. The space was also limited, especially with regard to the treatment of accident victims. There was also no water tank in which diving missions in the water could be simulated. In addition, there was no efficient helium cleaning and recovery system.


Construction of the new hyperbaric chamber at the University of Zürich

The old hyperbaric chamber of the University of Zurich met the requirements for a modern laboratory less and less. The diving depth was limited to 300 meters. The space was also limited, especially with regard to the treatment of accident victims. There was also no water tank in which diving missions in the water could be simulated. In addition, there was no efficient helium cleaning and recovery system.


About four months ago at Watch Angels we were approached by Thomas Bühlmann, the Son of Professor Albert A. Bühlmann, a recognized physician and truly “open source” scientist, whose mission in life was to make deep diving safe and possible for commercial work, especially in relation to the, at the time, starting deep see oil and gas exploration.

His desire was to make a watch that would honour his father’s scientific and human legacy.

A. Bühlmann’s lifework has been studying breathing and decompression science at the University Hospital of Zürich and making it available to the scientific community, without personal…


Developing procedures for carrying out long-term dives at depths of up to 700 m

In November 1963, A. Bühlmann, Shell International Research and Micoperi agreed a research and consultancy agreement. A. Bühlmann also became minority shareholder in a collecting society for intellectual property rights with the majority shareholders Shell International Research and Micoperi.

The contract provided for the establishment of a positive pressure laboratory at the University of Zurich with the aim of developing procedures for carrying out long-term dives at depths of up to 700 m.


By Stan Czubernat, Waltham historiand and Author of “Waltham Trench Watches of the Great War”

I have some wonderful news to share today! All of you probably already knew Charles Depollier is my favorite figure from horological history. Depollier invented the world’s first waterproof wrist watch that actually worked in 1918, the iconic Waltham Depollier “Field & Marine” Waterproof Watch.

103 years ago this week the first advertisements were published. Charles Depollier passed away on December 29, 1940.


The Swiss and their quest for depth

A few months after the 250m dive in the GERS hyperbaric chamber A. Bühlmann and Hannes Keller were back in Toulon. In advance, they tested a target depth of 210m in a one-person hyperbaric chamber in Zurich.

The overpressure chamber only allows a pressure of 8 ATM In order to simulate the pressure difference at 22.5 ATM which corresponds to a depth of 215 m, a combination of overpressure and underpressure was chosen. The experiment with a stay of 10 minutes at the target depth was successful. …


By Julien Chassagne (translated from French)

Independent designer for big names in watchmaking, Cedric Bellon launched a first watch model bearing his name, twice as durable as the average of other Swiss Made series watches, following the model of collaboratove manufacturing.

Nature lover and passionate about the exploits of Jacques-Yves Cousteau and Haroun Tazieff, Cedric Bellon first embarked on geological studies. But very quickly, he gets bored and changes lanes. He enrolled at the Nantes Atlantique School of Design and, after a five-year course and his diploma in hand, he launched his own agency in 2004 to work with the…

Watch Angels

Creator. Enthusiast. Manufacturer. That’s all a watch needs.

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