Digital Lifestyle Outfitters TransDock Marine Dock for iPod (Black) Splash-resistant FM transmitter + charger for iPod. FM transmitter with protective silicone for improved grip and corrosion resistance. Transmit iPod over your boat's FM radio. IntelliTune finds the best frequency in one click; Charge while it's plugged into TransDock Marine. Protect iPod in Action Jacket Splash, the neoprene case with water-tight zipper and play-through window.