Watchlab: Hermès’ Arceau L’heure de la lune ONLY WATCH

A selection of Hermès’ novelties for devotees of the luxury house looking for a new perspective of time.

For the latest edition of ONLY WATCH, a biennial auction of unique timepieces sold for the benefit of research on Duchenne Muscular Dystrophy, Hermès presents the Arceau L’heure de la lune ONLY WATCH. Most notably, the timepiece offers a unique vision of Earth’s satellite with the simultaneous display of mother-of-pearl moon phases in both the northern and southern hemispheres. On top of that, the mobile counters displaying the time and date will also turn weightlessly to reveal the moon discs while maintaining their horizontal orientation.

It’s worth noting that the Manufacture Hermès H1837 movement powering the watch is only 4.2mm thick, providing a unique challenge to the Maison. Ultimately, though, as an offbeat expression of a classic horological complication, this particular Arceau L’heure de la lune offers an original and exciting interpretation of Hermès’ watchmaking expertise.


At 12 o’clock, the moon is adorned by a Pegasus, designed by Dimitri Rybaltchenko. Titled Pleine Lune (Full Moon), this portrayal of the winged horse hints at a passage between two worlds, where magic and reality merge.

On the other hand, at 6 o’clock, the view of the moon from the northern hemisphere provides a realistic depiction of its surface

Case Material: White gold
Dial: Meteorite and blue rhodium-plated
Movement: Manufacture Hermès H1837
Case: 43 mm
Strap: Graphite and blue zephyr alligator calfskin strap
Water Resistance: 30 M