The Barnes and Noble Nook Glowlight Plus is one of the few high resolution e-readers on the market that are waterproof. It is IP67 certified, which means you can leave it completely submerged in water for up to an hour.
One of the things we were afraid of before we conducted this review is that the USB port is completely exposed. Every other e-reader and smartphone on the market often have waterproof protective flaps that insure no liquid will enter sensitive ports.
I am proud to say that the USB port exposed did not damage or render the Nook Glowlight Plus unusable. Nonetheless when it is completely underwater the touchscreen becomes unusable. This will obviously prevent you from using it while scuba diving in the Gallogus islands and swimming with the giant sea turtles, but will be fine in the bathtub, at the beach or dumping a full cup of Starbucks Gingerbread latte all over it.
When we conducted the submersion test Peter and I were quite surprised that the Nook Glowlight Plus is fairly buoyant. It took about five to ten seconds before the weight of it made it go completely underwater.