This product has some issues with waterproof, as when i placed this in my aquarium submerged in water, after two days it started showing me blurred image, when i went ahead to change the battery, there was full of water inside. I had to remove it from my aquarium. Other wise the result was almost accurate.
This normally happens when the cap on battery cover is not screwed properly and cause of that water enters the area. We have over 100+ customers using this product this year itself.