The diatom project:
The project was born during a presentation of my watches to Alex VOYER, captain of the sailing boat Diatomée, two years ago. As we live on the banks of the Canal de l’Ourcq, a few kilometres away, we met and Alex, who is passionate about watchmaking, especially diving watches, discussed it at length and, between knocking on the door, the alchemy of watchmaking took place, and the project was born.


VAT not applicable, article 293 B of the General Tax Code


Diatomée is a large sailing boat which allows us to travel from the poles to the tropics with the aim of raising awareness of the marine environment through the crossed views of scientists, children, athletes and artists who will come along on its expeditions.

The idea is to invite personalities with a particular attachment to water, to create a collective to develop projects rich in challenges, learning and artistic creation.

We put our knowledge in the fields we love (sailing, freediving, animals, image production), to set up expeditions, reports, our way of seeing the world, in the quietest and craziest corners of the planet.

We also collaborate with schools that follow our adventures and discover with us the wealth of the oceans to better protect them.

Part of the profits will be donated to the association.

Warranty 2 years parts and labor, except violent shocks proved, fall, broken glass or crown.


Technical specifications

Additional information


Diameter 39mm. Thickness 12mm. Length 47mm. 316L stainless steel satin finish. Screwed back, numbered


39.6mm. 316L stainless steel with PVD finish. Unidirectional. 60 minute graduation filled with white lacquer. Luminescent insert (super-Luminova c3) at 12 o'clock.


Screw-in crown. 316L stainless steel


2.8mm thick. Anti-reflective treated sapphire inside


STP 1-11. Swiss Technology Production. Swiss Made. Automatic winder with ball bearings. Frequency 28,800 per hour, 4Hz 26 jewels. 44 hour power reserve. Setting +0 +10 s


Hours, minutes, center seconds. Stop-second device


Matte black with super-Luminova BGW9 numerals and indexes.


Skeletonized hours, minutes and seconds, painted in matte black and white. super-Luminova BGW9.




Width 20mm. Stainless steel rings and buckle, buckle at 6 o'clock engraved with "HORLOSCAPHE". Stainless steel captive barettes

Strap color

Black Rubber, Nylon Blue, Nylon Grey, Nylon Orange, Nylon Sand, Nylon Two-tones Grey, Nylon Yellow, Tropic Black, Tropic Blue, Tropic green, Nylon Black, Nylon Kaki, Nylon Seat belt Black, Nylon Seat belt Grey

Shipping & Returns information

There are a few important points to keep in mind when returning a product you’ve purchased. You can return unwanted items by post against signature within 14 working days of receipt.

You have 14 calendar days to return an item from the date you received it.
Only items purchased directly from our official store.
Return conditions: intact (no knocks or scratches on the watch, bracelet or case) never worn in its original packaging.

Your watch will be delivered within 2 days for France and between 5 and 6 days for the rest of the world, by parcel with tracking.

On the shopping cart page, you can calculate shipping costs according to your country

IMPORTANT INFORMATION: Import taxes are not included. You may be subject to them depending on your country of delivery.

Discover our straps.

Tropic Strap green


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Rubber strap


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Strap Tropic Black


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Strap Tropic Blue


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Grey Two-tone Stripes Strap Nato Nylon


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Sand Strap Nato Nylon


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Grey Strap Nato Nylon


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Blue Strap Nato Nylon


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