Bluetooth does not travel through water well so if you are fully submerged underwater you will lose your connection. Bluetooth signals attenuate at a dramatic rate through water. You can swim laps with your head mainly out of the water, run in the rain, or shower to your favorite music. We’ve programmed these Earbuds to automatically turn OFF after 10 seconds inside water. When you take them out of water please make sure to fully dry them off before powering back ON or placing them inside the charging storage case.