Movement No. J250

Online Instruction Manual

Checking the rapid ascent
warning alarm tone

View in illustrations

The rapid ascent warning alarm sounds if you ascend 9 m or more in 1 minute. Use the steps below to check the alarm tone.

  • 1

  • Check that the crown is fully
    pushed in.

  • 2

  • Press and release the lower-left
    button to display the maximum
    depth.

  • 3

  • While the maximum depth is
    displayed, you can check the
    alarm tone by pressing and
    releasing the upper-left button.

To stop the alarm tone, either wait 10 seconds or press and release the lower-left button.