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How does the watch measure the UV index? BTW, what is UV index?

The AlpinerX has a UV sensor under the dial.

UV are the Ultra-Violet rays of the sun light, outside of the visible spectrum. At high exposure, the UV rays can damage the skin and increase risks of skin disease like cancer.

The UV index is a classification, from 1 to 12, of the intensity of the UV in the sunlight:

  • Low: 1-2
  • Medium: 3-5
  • High: 6-12
  • Very High: 11-12+
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How do I measure the UV with my watch?

To launch a UV index measure with your AlpinerX, please follow these steps:

  1. Press on your watch’s crown pusher at 3 o’clock until you reach the UV function on your AlpinerX's digital screen.
  2. To take your UV measure, make sure your dial faces the sun and press on the pusher at 2 o’clock.
  3. The index measure will flash on the watch’s digital display until the measurement is complete.
  4. UV LOW / UV MED / UV HIGH / UV XTR will appear on the screen according to the value.
  5. The results are also available in the app via the UV dashboard.

To launch a new measure, simply press again on the pusher at 2 o’clock.