The Aquapac Aqua-150 Radio Microphone Case is a dust proof, sand proof case made to allow use of a MP3 or iPod with a headphone with a wire leading outside the case. The case is use on the surface and should not be submerged. It is made from an ultra clear vinyl material that allows the infra-red to pass through. The case features the TC Aquaclip a wire thru seal which is watertight allowing wires up to 2.5mm (1/10th inch) thick to be used with the radio.