LG HFB-300 User Manual page 12

Electronic equipment
Most modern electronic equipment is shielded from RF energy.
However certain electronic equipment is not, therefore:
Do not use your Bluetooth Speaker Phone near medical equipment
without requesting permission. If you are using any personal medical
devices, e.g. a pacemaker or a hearing aid, please read in your mobile
phone's User's Guide for further information.
Aircraft
Turn your Bluetooth Speaker Phone OFF before boarding any aircraft.
To prevent interference with communication systems, you must not use
your Bluetooth Speaker Phone while the plane is in the air.
Blasting areas
Turn off all your electronic devices when in a blasting area or in areas
posted turn off two-way radio to avoid interfering with blasting operations.
Construction crews often use remote control RF devices to set off
explosives.
Potentially explosive atmosphere
Turn off your electronic device when in any area with a potentially explosive
atmosphere. It is rare, but your electronic device could generate sparks.
Sparks in such areas could cause an explosion or fire resulting in bodily
injury or even death.
Areas with a potentially explosive atmosphere are often, but not always,
clearly marked.
Power Supply
Connect the AC power adapter only to designated power sources as
marked on the product.
To reduce risk of damage to the electric cord, remove it from the outlet by
holding onto the AC adapter rather than the cord.
Make sure the cord is positioned so that it will not be stepped on, tripped
over or otherwise subjected to damage or stress. To reduce risk of electric
shock, unplug the unit from any power source before attempting to clean
it. The AC power adapter must not be used outdoors or in damp areas.
Danger : Never alter the AC cord or plug. If the plug will not fit into the
outlet, have a proper outlet installed by a qualified electrician. Improper
connection can result in risk of electric shock.
Placing
LG Electronics recommends that the Bluetooth Speaker Phone is worn in
positions where it will not be subject to pressure since such pressure may
result in bodily injury or damage to the product.