Speedo Aquabeat MP3 player sinks, floats, and is terrible at the butterfly stroke | Engadget
Speedo AquaBeat Diver 2GB Waterproof MP3 Player with Earphones|mp3 control|player vgaplayer figure - AliExpress
Amazon.com: Underwater case for The Speedo Aquabeat / 2 / Lime MP3 Player - Weather and Waterproof Case Safely Protects Against The Elements : Cell Phones & Accessories