Calibre 8412 — Perpetual
Grand Sérac
Chronometer
Nine hundred and eleven parts, assembled by one hand.
Certified to −2/+2 seconds a day, for the next forty years.
The collection
Three references, one movement
The calibre
Wound by the wrist, not the hand
A free-sprung balance, a silicon hairspring, and a bidirectional rotor on ball bearings. Seventy hours of reserve, held to the chronometer standard in six positions and three temperatures.
Inside the Calibre 8412
911
Components
70h
Power reserve
−2/+2
Seconds per day
300m
Waterproof to