Charnière

iPhone Duo, cased like a pocket watch. The cover is the lid, the inner display is the dial, the hinge is the crown.

Tilt the screen to wind a seal. Close the phone and the lid counts it down. Open early and, after five seconds, the seal breaks.

Eight Maisons, each drawn entirely in code: Titane, Argent, Urushi, Grand Feu, Aventurine, Noyer, Tourbillon and Céramique.