NOERDEN LIZ Manuel D'utilisation page 11

Note: The bottle is pre-set to remind you to drink every
2 hours. However, if you touch the lid or open it the
2-hour timer will start over.
UV Sterilization
LIZ's UV-C light kills viruses and bacteria in the empty
bottle and in the clear water it contains.
Tap the center of the lid twice to activate the UV
sterilization function.
For the duration of the sterilization process, the lid's
LED will flash white slowly.
During the sterilization process, you can tap the center
of the lid twice to stop the operation before it completes.
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