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Face up photo of Ultrathin Tourbillon Red Gold

Ultrathin Tourbillon Red Gold

One of the slimmest tourbillons in the world is shedding its adornments. Pared back to its purest expression, the Ultrathin Tourbillon Gold is elegantly revealed.

Limited to 88 pieces.

The finesse of gold and silver

Its vast dial displays an almost lunar silver-toned opaline finish, while the off-centred hours dial is made of genuine white opal. Nothing now distracts the eye from the hypnotic workings of the ultra-thin flying tourbillon – the signature of the collection.

The Ultrathin Tourbillon Gold is a harmonious timepiece housed in an 8.3 mm-thick case. Its dial with a wide opening has received a remarkably refined treatment that is unprecedented in the history of this model, an Arnold & Son icon.

The vast expanse of the dial features two apertures. One houses the hours dial and the other welcomes the visible elements of the A&S8300 calibre. The Ultrathin Tourbillon Gold expresses itself with elegance.

CHF 70,300
incl. VAT
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Technical Specifications

Reference: 1UTBR.I01A.C246R
hours, minutes
32.00 mm
2.97 mm
Power reserve:
100 hours
3 Hz / 21,600 vph
silver-toned opaline
white opal
18K red gold 5N
41.5 mm
8.30 mm
domed sapphire, with an anti-reflective coating on both sides
sapphire crystal, with an anti-reflecting coating
Water resistance:
3 bar (30 metres/100 feet)
blue alligator leather, black alligator leather lining, hand-stitched
folding clasp, 18K red gold (5N)

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Photo of Ultrathin Tourbillon Red Gold

Order and beauty

With a bassiné design, the slim 5N red gold case encircles the dial. A fine metal band of the same golden colour surrounds the hours dial and the tourbillon aperture. These repeating round lines are established according to a gentle yet rigorous geometry, creating a symmetry that enables the tourbillon carriage to stand out all the more clearly.

Photo of Ultrathin Tourbillon Red Gold

Luxury, carriage and delight

At the heart of the Ultrathin Tourbillon Gold beats the A&S8300 calibre, which – at only 2.97 mm thick – is one of the slimmest ever designed. The highest point of the calibre is at the top of its tourbillon carriage.

The variable-inertia balance ensures more stable calibration over time. The redesigned tourbillon carriage echoes the leading role John Arnold played in marine exploration during the 18th century. Its triangular shape evokes a sextant, while its double-arrow counterpoise represents an anchor. The point in the middle serves as a seconds marker, as the carriage completes a full rotation in one minute.