Polaroid Bluetooth Pool Speaker, Waterproof, Floatable, Portable & Rechargeable System (Grey) Hook it up - The speaker is equipped with a swiveling hook, for placement on pool rails, showerheads, and more. Stereo sound - Pair wireless devices to the speaker without bringing them near water. Built-in microphone - Take calls from the water using the speaker's control panel. Water shoes - Use the built-in non-slip feet for propping up on a ledge, pry take it with you into the pool for endless fun under the sun. Portable - Recharge the speaker with the included USB charging cable for hours of extended use.