[. . . ] Each part of the marine case has been subject to strict controls during the manufacturing process, and the individual functions have faced stringent tests during the assembly process. Each marine case has also had to pass waterproof inspections using high-pressure water testers. However, damage can sometimes occur during transport and distribution, or during storage after purchase, so before diving always carry out the following preuse test to verify safety. [. . . ] JVC accepts no responsibility for water leakage or damage to anything inside the marine case (camera, SD card, etc. The attachment base differs depending on the model of camera that you have. Screw tightening key · You can purchase the following set of expendable parts. Apply 2 or 3 drops of the glass cleaner provided onto one of the lens tissues or a clean cloth, and wipe the inner side of the marine case front glass. Still image shooting button Video recording start/stop button Power/mode switch lever: Turns camera's power on/off, or switches video or still mode. Inserting the provided silica gel between the camera and marine case prevents the inside of the marine case from steaming up. Pull the power/mode switch lever of the marine case in the direction of the arrow ( ), and rotate it to lock it ( ). If the power/mode switch lever is not locked, it may touch or damage the camera when the camera is put into the case. Base attachment groove Base Marine case internal base For cameras that are equipped with Base A, attach the lens hood. Line up the tripod screw hole on the base of Your camera with the base holes of the case, and tighten the screw. The risk of water leakage is extremely high if the O-ring is twisted, if you forget to attach it, or if something is trapped in the seal. Before recording Submerge the marine case with the camera equipped into a bathtub or water tank full of fresh water. Always have someone hold the marine case for · if for any reason water leakage occurs , remove You when diving into, or getting out of water. When you have finished recording, rotate the power/mode switch lever to turn the camera's power off. Pull the marine case power/mode switch lever to release the lock, and switch on the camera's power. Sometimes, due to sudden shaking or impact to the marine case, the camera's drop detection function operates to switch off the camera's power. [. . . ] Drop a few drops of the cleaning fluid onto the inside of the front glass, and wipe it off using the silicone cloth etc. Applicable model Base A: GZ-MG130 ~ 275 and base to be Base B: GZ-MG555 ~ 575 used Filter diameter ø 67. Doing so may cause discoloration to the case, and may cause the O-ring to deteriorate more quickly. [. . . ]