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Product information Product name: Universal waterproof phone case Material: ABS plastic/TPU/glass Waterproof depth: 15 meters Product size: 180x90x23mm Installed size: 165x78x10mm Weight: 145g Applicable scenes: swimming / beach / river tracing / surfing / snorkeling / water park / rainy day / takeaway How to use Open the locks on both sides Take out the inner holder and put the phone in the inner holder Make sure there is no debris in the bottom case Push in the phone and close the lock Use sestions *Before using, please do a waterproof test * When used underwater, you need to iate a proper amount of air into the phone case so that the TPU film does not fit the phone screen * When unlocking, ensure that the screen is free of water stains Test Methods: Put paper towels in the waterproof case, close the waterproof case, Put the waterproof case completely into the water, Put a certain weight on the item to avoid floating, Take it out after 30 minutes, And before opening the waterproof case, wipe off the water stains, Then take out the paper towel to check, if there is water, do not use it.