Sea & Sea 06138 - Manual (Page 12)

Make sure that the lens protector is properly mounted.
Removing the lens protector from the housing
Pull out and push up the left side (A) of the lens protector
Mounting
Align the three points (a, b and c) as shown and press the
lens protector into position
Operation
The lens protector should be removed when using an optional accessory
such as a conversion lens.
Lens Protector
E-11