Fascinating, mysterious: People have always found the moon captivating. With the Endeavour Perpetual Moon Concept model, H. Moser & Cie. pays remarkable homage to the lunar body. With two resolutely contemporary models, H. Moser & Cie. reinterprets the most poetic complication ever; showcasing the eye- catching moon in a large window at 6 o’clock, in all its splendour. A perpetual moon, the Endeavour Perpetual Moon Concept is one of the most precise moon phases available, with one day’s deviation every 1027 years.

By reinterpreting the moon phase in such an understated way, H. Moser & Cie. highlights the beauty of the lunar body in an ode to its purity. Nestled at the heart of the Concept dial, which features neither logo nor indices, the moon shines through in a large window at 6 o’clock. Surrounding it there is only space, seemingly interplanetary space. This effect is enhanced by the dial which is made from Vantablack® for the steel model. Its ultra-black coating, regarded as the darkest substance of all, Vantablack® is used in astrophysics in telescopes and by the army as thermal camouflage. It is composed of carbon nanotubes that are vertically aligned next to each other and is capable of absorbing 99.965% of light. It is the darkest black dial to be produced yet. The black colour is such that it appears astral, abyss-like: An undeniable black hole at the centre of which shines the moon. The Endeavour Perpetual Moon Concept in steel has an elegant, serene and refined moon phase display. A contemporary and bold design equipped with a black leather strap.

More sensual, the 5N red gold version features an H. Moser & Cie. midnight-blue fumé dial. Its deep lustres, with twilight tones, are perfectly matched with the red gold of the case. A brown alligator leather strap adds the finishing touch.

The Endeavour Perpetual Moon Concept is powered by the HMC 801 hand-wound Manufacture calibre, equipped with an interchangeable Moser escapement. This calibre ensures the watch has a minimum 7-day power reserve, with an indicator on the movement side. The moon phase system is an extremely precise display that can be set, read and predicted to within a minute. The system can be easily adjusted using a push-button on the side of the case. On average, the moon’s orbital period lasts 29.53059 days. To be more precise: 29 days, 12 hours, 44 minutes and 2.9 seconds. The Endeavour Perpetual Moon Concept’s intricate wheel train portrays this interval so precisely that the gap is a mere 0.23 seconds per day, that is to say one day’s deviation after 1027.30 years, making it the most precise model available.

The H. Moser Endeavour Perpetual Moon Concept embodies technical complexity, is unconditionally elegant and understated and worthy of the finest watchmaking traditions. Available in steel or red gold, the Endeavour Perpetual Moon Concept is available in a limited edition of 50 pieces for each of the two references.

The unmistakeable H. Moser style of irreverent Haute Horlogerie.

H MOSER & CIE 1801-1200



– Steel or 18-carat 5N red gold

– Diameter: 42.0 mm, height: 12.9 mm

– Sapphire crystal

– Screw-in crown adorned with an “M”


– Vantablack®

– Leaf-shaped hour and minute hands

– Centre seconds and AM/PM hands

– Moon phase window


– Hand-wound HMC 801 Manufacture calibre

– Diameter: 34.0 mm or 15 lignes, height: 6.5 mm

– Frequency: 18,000 Vib/h

– 28 jewels and screwed gold mounts

– Power reserve: minimum 7-day with a double barrel

– Bevelled ring and Moser teeth for all wheels and pinions

– Interchangeable Moser escapement

– Original Straumann® Hairspring

– Traditional screw balance wheel with gold adjusting screws

– Gold escapement wheel and pallet fork


– Hours & Minutes

– Centre seconds hand and hacking seconds

– AM/PM indicator – Hours 12 to 6 o’clock representing AM and 7 to 11 o’clock representing PM

– Large moon-phase indicator display

– Power reserve indicator on movement side

– Moon-phase adjuster push-button on the case flank


– Hand-stitched black leather or brown alligator leather

– Steel pin buckle engraved with the Moser logo

Slay Billionaire offers free and insured worldwide delivery. You can expect your timepiece to be delivered in average within 2-5 working days for the UK and European Community, and 4-8 working days for the rest of the World.

Concierge Price: 59,379
Includes complimentary worldwide shipping

Instructions to purchase: click the Buy Now link above, enter the title of this post in the enquiry field, fill in the necessary details and click send. Slay Concierge will contact you to confirm details

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Fascinating, mysterious, Sombre beauty of the moon, Irreverent Haute Horlogerie

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