Verykool s758 - Manual (Page 46)

handset kept 1.5cm from the body. To
maintain compliance with FCC RF
exposure requirements, use accessories
that maintain a 1.5cm separation
distance between the user's body and
the back of the handset. The use of belt
clips, holsters and similar accessories
should not contain metallic components
in its assembly. The use of accessories
that do not satisfy these requirements
may not comply with FCC RF exposure
requirements, and should be avoided.
FCC WARNING
46