Louis Vuitton Tambour Outdoor Manual page 27

Chronograph function
All chronograph hands must be set to their starting point before use.
A
B
Simple timing and totaliser timing:
Start: press push-button A.
Stop: press push-button A again.
Read the time.
Resume: press push-button A to resume the chronometer timing.
End of chronometer timing: press push-button A.
Read the time.
Reset: press push-button B after stopping the chronometer timing.
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