Sea&Sea MDX-a7 II Instruction Manual page 11

Closing the locking latches
1
Align the front case with the rear
case and press them together
2
First, put the right and left
locking latches on the hooks (
and close the locking latches
simultaneously (
CAUTION
Before aligning the rear case and front case, make sure there are no specks
of dust, scratches, or deformities on the O-ring and the O-ring contact
surfaces.
Check to make sure that the locking latches are securely locked.
),
)
Opening and Closing the Housing
E-10