Is the UE Wonderboom waterproof? Can I take it with me to the beach without worrying about water damage? I’m planning a girls’ trip and we want to enjoy our favorite tunes while having fun in the sun. I don’t want to risk ruining my speaker if it accidentally gets splashed or submerged in water. Can anyone confirm if the UE Wonderboom is truly waterproof or just water-resistant? Also, if it is indeed waterproof, how deep can it be submerged without causing any damage? I want to make sure it can handle being in shallow water without any issues. Thank you!