Verykool R16 - Manual (Page 21)

equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
Note 2:
Any changes or modifications to this unit not expressly approved by
the party responsible for compliance could void the user's authority
to operate the equipment.