Proper care for the SPB112's rechargeable lithium-ion battery will extend its lifespan.
Ensure there is a clear, unblocked line of sight between the remote and the center-right section of the soundbar grille.
Since Technika products are frequently sold via ALDI's "Special Buys" (hence SPB - Special Purchase Buy), ALDI often hosts manuals on their service site.
Release the button. The system memory is now cleared and restored to default factory settings.