Tesla Squelette Quadri-Rotor 1/1 Unique Piece. Movement: Self-winding movement entirely manufactured in Switzerland. Power reserve: 42 hours. Jewelling: 25 jewels. Case* 316 steel: Silver-coloured "Coup de foudre" Collection: cases engraved, mutilated, tortured, “lightning-struck” 100,000 volts, 200,000 volts, 500,000 volts or 1,000,000 volts. Diameter: Ø47mm. Crystal: Sapphire. Back: Open, fitted with a sapphire crystal. Water resistance: 50 metres. Bracelet: “Alzavel waterproof” treated leather and hand-sewn high-tech rubber, or “crazy frog” tanned cane toad. Buckle: Treated steel pin buckle. Guarantee: 24 months. *Depending on the mood of the moment, the cases in the lightning-struck “Coup de foudre” collection undergo thermal combustion, modelling, engraving and other operations performed by hand in the Artya ateliers.