The Grande Seconde incarnates the essence of the Jaquet Droz watchmaking art. The sapphire dial, on which the large seconds hand turns, perfectly complements the skeleton movement, constructed in successive layers, themselves visible from the side. At 12 o’clock, the hours and minutes turn around a sapphire hour ring, set on a base of gold. The Grande Seconde Skelet-One, equipped with a silicon double barrel, balance spring and pallet lugs, features a hand-assembled Caliber 2663 SQ. The Grande Seconde Skelet-One, with a diameter of 41 mm, comes in three interpretations: red gold, white gold and ceramic.