A: About how to use the COZING-USBO6, please kindly view link:https://youtu.be/UTlz4odF7tM
Pls be sure you have installed the battery inside the main unit; once the battery is run out, you can charge the battery via the USB type charger, pls notice , there is “+”and “-” on the charger, be sure, the battery and charger “+”and “-” are all at the same.
