Panasonic KW-WP1050E Operating Instructions Manual page 230

Useful Information
L For body-worn operation, the handset must be used only with a non-metallic accessory.
Use of other accessories may not ensure compliance with FCC RF exposure
requirements.
Responsible party:
Panasonic Corporation of North America
One Panasonic Way,
Secaucus, New Jersey 07094
Phone number: 1-800-211-PANA (1-800-211-7262)
FCC Warning:
To ensure compliance with FCC emissions limits, use only the included charge cable
with the ferrite core when connecting the handset to the base unit.
230
Helpline Tel. No.: U.K. 0844 844 3898