Haute Watch of the Week: Piaget Emperador Coussin Ultra-Thin Minute Repeater

Piaget holds several records for ultra-thin horology, including the thinnest automatic movement, the thinnest automatic chronograph and the thinnest automatic perpetual calendar. The Emperador Coussin Ultra-Thin Minute Repeater is the world’s thinnest automatic minute repeater.

At only 4.8mm thick, caliber 1290P presents in a watch that is only 9.4mm in its case (both movement and case thickness set a new record).

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The repeater is generally considered the most difficult of all complications to execute, and the addition of an automatic winding system makes the challenge even more daunting, as the automatic winding train has to be incorporated into what’s already an extremely crowded space.

A micro-rotor, set into the plate itself, plus a reorientation of the repeater slide – it is pushed downwards rather than upwards – helps make room for all 407 components.

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Photos courtesy Piaget.