Manufacture Arnold & Son caliber, fully skeletonized and
symmetrical, hand-wound, 24 jewels, diameter 31.50 mm, two
mainspring barrels, screwed balance wheel, thickness 4.04 mm, power
reserve 90 h, 3 Hz / 21,600 vph, adjusted to 5 positions.
Solid 18-karat red gold bridges and palladium main plate with
haute horlogerie finishing, chamfered bridges with polished edges
and brushed surfaces, chamfered wheels with A&S three-spoke
design and polished edges, gold chatons, screws with bevelled and
mirror-polished heads .