It
is possible to shower with the PULSE on though this is not recommended
as the audio output will be effected when your ears fill up with water.
Where water may come in contact with the Pulse, the USB cover must be
completely closed. When the PULSE is immersed in water it is necessary to
dry the unit out afterwards.

Excess
water that is lodged in eartubes. meshes and microphone openings may
temporarily reduce audio performance until dried. Therefore, Pulse should
be cloth towel wiped and naturally dried for a few hours. It must not
be artificially heated or blown dry. This is conveniently done after
being cloth wiped dry on all surfaces and crevices while charging.