Aurelle
Assembling calibre
Assembled watch
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Calibre A-01 · Lune Squelette

Time,
laid bare.

A skeletonised moon-phase in 18k rose gold. Scroll to take it apart, one component at a time.

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02The engineering

312 components.
One heartbeat.

Calibre A-01 is built in layers, front to back: sapphire, bezel, a skeleton dial, three bridge levels, the gear train, an escapement beating at 4 Hz, a mainspring barrel and a rose-gold rotor. Nothing is decorative weight. Every bridge carries a wheel, and every wheel transmits energy from the barrel to the balance.

Calibre A-01 exploded into its component layers
28,800
Vibrations per hour
72 h
Power reserve
41
Ruby jewels
±2 s
Daily rate tolerance
03Precision components

Read the movement,
layer by layer.

Eight assemblies, in the order they leave the case.

01
Sapphire crystal
Domed, anti-reflective on both faces, 9 on the Mohs scale.
02
Polished bezel
18k rose gold, mirror-polished on the slope, satin on the flank.
03
Skeleton dial
Open centre, applied indices, aventurine moon-phase window.
04
Upper bridges
Hand-skeletonised, every inner angle bevelled and polished.
05
Gear train
Gilded wheels with five-spoke crossings, cut and finished in-house.
06
Balance + escapement
Free-sprung balance with gold timing screws and a Breguet overcoil.
07
Barrel + rotor
Twin-wound mainspring, bidirectional rose-gold rotor.
08
Case + crown
Three-part case, sculpted lugs, knurled screw-down crown.
04Craftsmanship

Finished where no one will look.

Each movement spends more time at the finishing bench than in assembly. A skeleton hides nothing, so every surface is treated as visible.

I
Anglage
Bridge edges are bevelled at 45° by hand, then polished until they catch light as a single line.
II
Perlage
Overlapping circular graining covers the main plate, including the faces hidden beneath the wheels.
III
Flame-blued screws
Polished steel heated by hand to 290 °C, until it turns that deep blue.
05Technical specifications

Calibre A-01

Movement
TypeAutomatic, skeletonised
FunctionsHours, minutes, moon phase, date
Frequency28,800 vph · 4 Hz
Power reserve72 hours
Components · jewels312 · 41
Moon-phase accuracy1 day in 122 years
Case
Material18k rose gold
Diameter · thickness41 mm · 11.4 mm
CrystalDomed sapphire, AR both sides
Case backSapphire exhibition window
Water resistance50 m
StrapHand-stitched alligator, gold pin buckle
06Product story

“We wanted a watch you could understand by looking at it. So we took the dial away and made the movement the face.”

A-01 started as a cutaway drawing on the workshop wall, showing how energy moves from the barrel to the balance. Each later prototype removed more metal, until the architecture and the design were the same thing.

One watchmaker assembles each piece from start to finish, then signs the barrel bridge. The moon phase is set by hand to the night it leaves the atelier.

The Aurelle atelier
Limited to 88 pieces

Reserve
the A-01.

Private viewings are held in Geneva, London and Singapore, or at your home with a member of the atelier.

A member of the atelier will reply within two days.
Thank you.
We'll write to {{ email }} to arrange your viewing.