Canon WP-DC27 Guide D'utilisation page 36

Removing the Diffusion Plate
Grip the diffusion plate and detach it by pulling in
the direction shown by the arrow.
Playback
1
Press the 1 (Playback) button.
2
When you have finished using the
camera, turn the camera off.
After you use the Waterproof Case, be sure to
remove the camera from it. If you leave the
Waterproof Case containing the camera in
direct sunlight or in a high-temperature place,
this may cause a fire or the case to burst.
Power Button
1 (Playback) Button
17