Nikon D780 Reference Manual page 39

Keep dry. Do not handle with wet hands. Do not handle the plug
with wet hands.
Failure to observe these precautions could result in fire or electric shock.
Do not let your skin remain in prolonged contact with this product
while it is on or plugged in.
Failure to observe this precaution could result in low-temperature burns.
Do not use this product in the presence of flammable dust or gas
such as propane, gasoline or aerosols.
Failure to observe this precaution could result in explosion or fire.
Do not directly view the sun or other bright light source through the
lens or camera.
Failure to observe this precaution could result in visual impairment.
Do not aim the flash or AF-assist illuminator at the operator of a
motor vehicle
Failure to observe this precaution could result in accidents.
Keep this product out of reach of children.
Failure to observe this precaution could result in injury or product
malfunction. In addition, note that small parts constitute a choking
hazard. Should a child swallow any part of this product, seek immediate
medical attention.
Do not entangle, wrap or twist the straps around your neck.
Failure to observe this precaution could result in accidents.
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