Why does the buckle of the Xiaomi Smart Band 8's strap easily come undone?

Question

Accepted Answer

When wearing the band, avoid scratching the end of the short strap (buckle end) with hard objects to prevent accidental detachment of the buckle due to scratching. The strap is designed with a curved structure resembling the wrist, so if the buckle accidentally loosens due to misoperation and is not subjected to external force, it will not automatically detach. Simply tighten the buckle promptly. If prolonged wear causes wear and deformation of the buckle hole, resulting in easy detachment of the buckle, replace the strap promptly.