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P.4001 & P.4002

THE CALIBRES WITH POWER RESERVE INDICATOR

The P.4001 and P.4002 calibres are developed from the automatic P.4000 movement whose main technical characteristics they share: the off-centred micro rotor - which rotates in both directions and reduces the thickness of the case -, the power reserve of three days stored in two spring barrels linked in series, the mechanism for stopping the balance, enabling the time to be set with precision and the full balance bridge with twin supports for greater stability.

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The new calibres also have some extremely useful additional functions: the date, the GMT function with a central hand which indicates the time in a second time zone, am/pm indication (relative to home time) in the small seconds dial and, finally, indication of the remaining power reserve. This latter element is the only detail in which the P.4001 calibre differs from the P.4002: while the first has the circular indicator on a bridge of the movement, the second has the indicator positioned directly on the dial at 5 o’clock. Finally, two very useful devices make setting the watch simple and precise: the first is the mechanism which stops the balance and zeroes the seconds hand as soon as the winding crown is pulled out; the second enables the local time hand to be adjusted forward and backward in jumps of one hour at a time, without stopping the minute hand or interfering with the running of the watch, but automatically adjusting the date.