The Paralenz Dive Camera has triple O-rings and is tested to 250m/820FT
To prevent flooding always ensure that the O-rings are clean and free from dirt before going underwater.
Occasionally the O-rings should be maintained, with the included silicone grease. Only a thin layer is necessary.
Additionally, always make sure that the end cap and lens ring are tightened and there are no cracks on the glass lens.