Introducing: Parmigiani Fleurier Tonda PF Chronograph Mystérieux ‘Mineral Blue’ Reinvents The Central-Counter Chronograph

But the real show is the hidden chronograph functionality. When using the watch normally, the rhodium-plated hour and minute hands function to show normal, civil time, and the central second hands just keep track of civil time as well. If you start the chronograph, the central seconds hand instantly jumps to 0 and starts to function as a chronograph. 

The rhodium-plated hands also reset to zero and turn into counter hands, counting the running minutes and hours, while moving to reveal the rose gold hour and minute hands underneath that still track civil time. Stopping the chronograph stops those rose gold hands from continuing to track civil time. A third activation of the pusher brings everything back to tracking civil time and hides the rose gold hands again.