PowerLocus Bobo Bedienungsanleitung Seite 6

HOW TO RESET THE HEADPHONES?
By holding the „-" button and "+" button at the same time for
5-6 seconds, the headphones will disconnect from the paired
device and the LED will change from solid BLUE to Flashing
BLUE/RED.
Once disconnected, you can repeat the action for reset again,
so the Bluetooth memory will be deleted fully.