Xiaomi Mi Watch Lite Manuel D'utilisation page 10

Adjust & Install/Uninstall the Strap
Adjust the position of the buckle according to the circumference of your wrist. To
install or uninstall the strap, refer to the figures below. You can pull the strap to see if
it is installed securely.
Uninstall the strap: Press down the release bu on with one hand, and
simultaneously pull out the strap with the other hand.
Install the strap: Align the slot of the strap with the watch and then insert it to the
watch until you hear a click.
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