Neuhausen am Rheinfall, July 1st 2021

H. Moser & Cie. is proud to join the fight against Duchenne Muscular Dystrophy by participating for the fourth time in the Charity Auction organised by the Monegasque Association against Muscular Dystrophy through the Only Watch campaign. This auction will be held on November 6th,2021 in Geneva. For this occasion, the Schaffhausen-based Manufacture has created a unique piece, showcasing several of its bold signature codes. H. Moser & Cie. has brought the Streamliner Cylindrical Tourbillon Only Watch to life by combining Vantablack® –the super-black coating reputed to be the darkest man-made substance in existence –with its three-dimensional movement equipped with a cylindrical hairspring, housed in the Streamliner case.

A shaped watch with a steel cushion case 40 mm in diameter, water-resistant to 12 ATM, the Streamliner Cylindrical Tourbillon Only Watch is designed as sculptural work of art, and is topped with a domed sapphire crystal. Its movement was developed in collaboration with MB&F for a special edition launched in 2020 and highlights the balletic dance of the 1-minute flying tourbillon equipped with a cylindrical hairspring. Invented in the 18th century, the cylindrical hairspring rises perpendicularly around the upper stem of the balance spindle. A frequent feature on marine chronometers at the time, it offers the advantage of developing concentrically. Thanks to the cylindrical hairspring, fitted with a Breguet curve attached at two points, friction on the pivots is reduced and isochronism is greatly improved. Owing to its specific shape, the cylindrical hairspring is also extremely difficult to produce, taking ten times longer than a traditional hairspring. This hairspring was developed and produced by Precision Engineering AG, H. Moser & Cie.'s sister company.


H. Moser & Cie. chose a dial in Vantablack®to accentuate the depth of the cylindrical tourbillon movement. Reputed to be the darkest substance in existence, this super-black Vantablack® coating is used in astrophysics for telescopes and by the military asthermal camouflage, to increase the stealth level of certain equipment. It is composed of juxtaposed carbon nanostructures. When a photon hits Vantablack®, this material absorbs 99.965% of the light. As our eyes need reflected light to perceive what we are looking at, Vantablack® is perceived as the absence of matter, a black hole. Radiating the full power of its perfect blackness, the Vantablack® highlights the beauty of the flying tourbillon in an ultra-contemporary, refined and timeless manner. It also accentuates the hours and minutes dial, which is made from sapphire and tilted at a 40° angle, so that the wearer is the only one able to discern its secrets.


The curves of the case extend to the integrated steel bracelet, which is elegantly arced to follow the line of the wrist, with the unique design of the links ensuring a perfect fit. Highly complex in construction, this bracelet has extremely fluid lines, based on organic forms. All the links are articulated and feature a gentle wave combining a vertical brushed finish with polished surfaces.


The Streamliner Cylindrical Tourbillon Only Watch will be on display in Monaco during the Monaco Yacht Show from September 22nd to 25th,2021. The Only Watch 2021 collection will then go on tour in Europe, Asia, the Middle East and the USA, before finishing in Geneva on November 6th, 2021.


H. Moser & Cie.’sown and unique take on Haute Horlogerie.




Reference 6810-1200, steel model, main dial in Vantablack®, hours and minutes dial in sapphire, integrated steel bracelet, unique piece



Steel topped by a highly domed sapphire crystal

Diameter: 40.0 mm

Height without sapphire crystal: 10.0mm

Crown at 9 o'clock, engraved with an "M"

See-through case-back

Water resistance to 12 ATM



Main dial in Vantablack®

Hours and minutes dial in sapphire tilted at a 40° angle positioned at 6o'clock

Leaf-shaped hour andminute hands



HMC 810 three-dimensional automatic Manufacture calibre

Diameter: 32.0 mm or 14 ¼ lignes, height: 5.5 mm

Frequency: 21,600 Vib/h

29 jewels

184 components

Automatic bi-directional pawl winding system

Oscillating weight in gold with engraved H. Moser & Cie. logo

Power reserve: minimum 72 hours

Cylindrical hairspring

1-minute flying tourbillon at 12o'clock with skeletonized bridge



Hours and minutes



Integrated steel bracelet

Folding clasp with three steel blades, engraved with the Moser logo

Half-links available



Streamliner Cylindrical Tourbillon Only Watch, ref. 6810-1200, steel model, main dial in Vantablack®, hours and minutes dial in sapphire, integrated steel bracelet, unique piece