Tonda PF Chronographe Mysterieux

Part of a continuing exploration of invisible complications, the Chronographe Mystérieux extends Parmigiani Fleurier’s unique approach to time, where function appears only when it holds meaning.
An invisible chronograph. Appearing only when needed.

At rest, the watch reads as a pure three-hand TONDA PF.
No counters. No indication. No visual disturbance.
The chronograph is present, yet nothing reveals it.

A monopusher at 7:30 activates the sequence.
One press starts the measurement.
A second stops it.
A third resets and makes it disappear.