Easy quick release
Simply press and pull for quick replacements
With the hidden-lug design, the band is sleek and sophisticated, but practical too — replace your strap in just three easy steps.
Adjustable strap
Find the perfect fit for you. Adjust the buckle to fit your wrist circumference.
Detaching and attaching the strap
1. Hold down on the quick-release buckle with one hand and remove the strap with the other.
2. Insert the strap into the quick-release buckle, then push until you hear a click. The strap is now attached. Pull on the strap to check that it is attached properly.
Source : mi.com
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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 button 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.
Source: https://manuals.plus/xiaomi/m2109w1-redmi-watch-2-lite-smartwatch-manual#ixzz7We70Amz1