Fantasea Line M46 BigEye Lens - Manual (Page 4)

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C. During the dive, install the BigEye Lens by screwing it on to your housing
lens port, as shown on the figures below.
Important Notice:
The BigEye Lens should only be screwed till the point of minimal resistance.
Continuing to screw the lens further than this point will make it difficult to remove it
later on. If this happens, in order to remove the lens, please use a slight amount of
pressure against the dome or plastic protector wings by pushing in and turning
counter clockwise at the same time.