Pre-order CHF. 1’660.- without taxes

CHF. 1’790.- with Swiss taxes

Delivery June 2022


An original revisit of the pentagon

Tzoumy watches were born from the meeting of Yvan Monnet with several enthusiasts and collectors who wished to propose simple and elegant timepieces with a disruptive pentagonal design, far away from the current following, while respecting the Geneva watchmaking tradition. Watches with a touch of rebellious spirit that will highlight your personality and assertive choices.

Tzoumy Coulouvrenière

A discreet and unforgettable pentagonal beauty powered by a new version of the “Landeron 24” automatic caliber made in Switzerland.

Tzoumy Denim
Tzoumy Melon
Tzoumy Melon
Tzoumy Melon
Tzoumy Melon
Tzoumy Melon
Tzoumy Melon

This new watchmaking project proposes a unisex, sober and elegant design, opening up to a wide public through design optimization and rationalized production of components in strict compliance with watchmaking standards and luxury codes.

Art Work by Rogger LAgos

Art Work by Rogger Lagos

All rights reserved

A sober and elegant pentagon inspired by the 5 branches of a star

Calibre Lnderon 24

At the end of 2020, Yvan Monnet designed this new pentagonal shape that he decided to propose in an elegant and timeless version, away from the current trend. He used all his know-how for his new creation and worked on each detail to find the harmony between form and function. In order to have a watch that stands the test of time, the choice of a high quality stainless steel was imposed in order to be able to repolish it if necessary.

To appeal to the greatest number of people, he offers this model with five dials with a sunray satin finish in galvanic colors ranging from the classic silver opaline to the original melon orange, including a denim blue, cobalt blue and charcoal gray. The choice of this dial back termination plays with the light and brings subtle variations according to its luminous environment.

In accordance with its values and ethics, it has opted to equip this design with the new version of the legendary “Landeron 24” automatic caliber to make it a durable watch that can be passed on from generation to generation.

His ingenuity and respect for the customer led him to develop a clever system for changing bracelets that allows the original bracelets to be replaced by commercial bracelets equipped with lugs without the need for tools.

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Change of wristband

Our choice of wristbands

Calf leather – Hand sewn

Bracelet Bleu


Bracelet Bleu foncé

Dark blue

Bracelet noir


Bracelet Brun


Bracelet cognac



This city dweller from Geneva who spent his childhood in the Valais appreciates in the same way the comfort of city life with its facilities and comforts as the simplicity of life in the mountains in a preserved environment. A fine gourmet, lover of wide open spaces and preserved nature, this dreamer with a touch of rebelliousness has chosen, in reference to his childhood vacations and the place where he likes to come and recharge his batteries in all simplicity in the family chalet in the vicinity of “La Tzoumaz”, that he has decided to call his new brand “Tzoumy”.

Yvan Monnet - fondateur Tzoumy

Technical data

Tzoumy eclate


316L Steel case stainless steel, polished-brushed

Anti-reflective sapphire glasses on the bezel and the back

Tzoumy crown at 14h30

Diameter 3h-9h > 40mm, Thickness: 9,5mm

Lug width: 20mm


Sunbrush finishing, 5 colors – opalin (white) – cobalt blue – anthracite – denim blue – melon (orange).

13 hours markers, two-tone décals


Polished faceted and recessed hours and minutes hands

Second hand arrow balanced


Caliber Landeron 24 avec masse Tzoumy

Max. run time deviation: 10 sec/day

Frequency 28’800 A/h (4Hz)

36h power reserve

Leather Straps

Hand-sewn calf leather, tanned in Italy

2 leather straps gifted with a watch, one with a deployant clasp and one with a pin buckle.





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