A Tantalising New H. Moser & Cie. | The Endeavour Perpetual Calendar Tantalum Blue Enamel

Avani Gangwal
22 Feb 2023 |
clock icon5 min read
like image
comment icon image
like image
SUMMARIZEarrow down


The most legible and intuitive perpetual calendar by H. Moser & Cie. is now armoured with a Tantalum Case armor and a striking new Blue Enamel dial. Combining the watch’s sheer engineering brilliance with a traditionally handcrafted hammered texture blue enamel dial, the newly introduced Perpetual Calendar gets a first-of-its-kind Tantalum case.


As an opulent realization of over two years of complex testing complemented by an advanced materials expertise, H. Moser & Cie. has successfully balanced metallurgical finesse with superlative aesthetics in this glimmering creation offering scintillating anthracite and blue reflections.

Why Tantalum?

Tantalum is a rare and prestigious metal that combines unparalleled strength and density with unique resistance to corrosion, keeping it pristine even in the presence of most chemicals or acids. When in contact with air Tantalum develops a fine layer of oxidation that protects the metal against aggression.

With a melting point of around 3000 °C, it requires advanced metallurgical expertise to machine. Its very dark grey colour is enhanced by bluish reflections, and does not tarnish. An exceptionally stable metal, tantalum combines beauty with durability. "When I was 18, my parents gave me my first Haute Horology watch, which was made from tantalum. Ever since then, I have dreamed of introducing this metal at H. Moser & Cie., in spite of the challenges it poses. It took more than two years of testing before we were able to polish the surfaces of our case, a feat that few have been able to match, with most preferring to sandblast or satin-finish tantalum", Edouard Meylan, CEO of H. Moser & Cie

H.Moser & Cie.

What is so special about this watch?

A 42mm diameter with a 168 hours power reserve, it houses Moser’s award-winning manual-winding Perpetual Calendar movement, where the calendar mechanism is an integral part of the movement rather than a modular add-on - HMC 800.

H.Moser & Cie.
You can’t really miss the textured and immaculate fumé dial on this one. Yet again lending a new dynamic to the traditional art form of enamelling with the use of a pattern engrained, as if hammered, onto a gold base and three different colour pigments that are melded together. Careful work and limitless patience are required for the master enameller to painstakingly apply the pigments, adding them one by one so that the colours oxidise and meld together when heated in the furnace, without any pixellation. A translucent "Grand Feu" enamel dial must be fired twelve times in total to create the signature H. Moser & Cie. fumé effect. Each dial is unique.

Endeavour Perpetual Calendar Tantalum Blue Enamel

How does it function?

The H. Moser & Cie. perpetual calendar can nevertheless boast of an unrivalled ease of use, one that even a child could operate. The absence of a subdial and date disc makes it very easy to read. Rather than inundate the dial with windows, this perpetual calendar uses a small hand in the centre and the 12 indices to represent the month. Additionally, the date and month can be set forwards or backwards at any time, without risk to the movement.

And as Andreas Albert, Head of Assembling & Adjustment (Precision Engineering) says, "It’s actually one of the main reasons I wanted to work for Moser. To me, it’s the best Perpetual Calendar out there.”

The Endeavour Perpetual Calendar Tantalum Blue Enamel serves the wearer an unparalleled excellence in form perfectly augmented by functional brilliance to a level beyond the superlative.


Real luxury truly is a question of identity – even without obvious markers. Yet another unique take on Haute Horlogerie by H. Moser & Cie.

Are you tantalised?

Priced at: Approximately CHF 75,000