Stay fit, look at fish & listen to the radio--now you got my attention. The Aqua FM uses unique bone conduction technology (YIKES!) that allows the user to listen to their favorite radio station while swimming or snorkeling. Swim workouts will hereafter rock! Bite down on the mouth piece and sound is conducted through the teeth and into the inner ear, providing clear, amazing sound. No wires. No headphones. Not eco--but I love this!