All did just fine. We then tested the water resistant lights in the pool as well. Only a few, as noted, continued working. Many of the water resistant lights function even though they were flooded inside and drying them out after getting wet is all that is needed to maintain their usefulness. Failing to do so results in a rusty mess that sooner or later quits functioning.
Shock resistance is another advantage claimed for LEDs.
We drop tested the flashlights four times from six feet onto concrete with not a single LED failure and little in the way of any other visible damage to the body of the lights themselves. That's an impressive showing. In some instances with tubular design flashlights with multiple AA-cell or larger batteries we had some functional failures. This occurred intermittently and only when dropped squarely on the head or tail. When this occurs, either contact is lost between the batteries or internally there is some sort of damage, either of which can prevent electricity from flowing.