Movement No. B620

Online Instruction Manual

The chronograph is not working properly

  • 1

  • Leave the watch in direct sunlight
    for several days to recharge.

  • 2

  • Check that the crown
    is fully pushed in.

  • 3

  • Press and release the lower-right
    button to reset the chronograph.

I reset the chronograph
but it is still not
working properly

View in illustrations

  • 1

  • Pull the crown out two steps.

  • 2

  • Press and hold the upper-right
    button for 2 seconds.

  • 3

  • Press and release the upper-right
    button to set the chronograph
    second hand to 0 seconds.

The chronograph second hand moves continuously while the button is held down.

  • 4

  • Push the crown back in.

  • 5

  • Press and release the lower-right
    button to complete the process.

The chronograph runs for 60 minutes.

It will display elapsed time up to a maximum of 59’ 59.8”.

Once started, the chronograph runs for 1 hour and then stops.

The time is displayed normally while the chronograph is in use.

The chronograph cannot be used during the charging warning (2-second hand movement).