The super character is the smart sensor of skin and water through the conductor at the bottom of the light. Therefore, it is waterproof. When the conductors get in touch with the skin or water, seven color shining lights will blink. It is made from soft glue which is a light, cavity material when you press down. It can be taken along as a bag pendant or a night light. If you have a baby, he will like bathing if you put the lovely sea lion in the water. The built-in battery cannot be placed but can be charged in the water to elongate the life span to two years. When you take it out of the water, clean the water to the best of your abilities to elongation the life span.