Nikon WP-CP4 User Manual page 24

Cleaning the Interior of the Case
Use a blower or a soft, dry cloth to clean the interior of the case. Do not use water,
detergents, or chemical agents of any kind. Water can damage the coating on the
inside of the lens window.
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Wipe dry
Dry the case thoroughly with a soft, dry cloth. Do
not use a cloth to which salt has adhered.
Let the case dry in the shade
Leave the case out to dry in a shady, well-venti-
lated area.
Do Not Exposure to Sunlight or Heat
Do not use a hair dryer or other heat source or
place the case in direct sunlight. Heat could cause
the O-ring to deteriorate, resulting in leakage.