Neptune is a waterproof MP3 player that provides the highest quality sound in the water without the use of ear buds. Neptune uses revolutionary Bone Conduction audio transmission to transmit crystal clear audio through the cheekbone directly into the inner ear. With 4GB of storage, aquatic athletes can listen to music, audio books, podcasts and more, all with incredible sound. The included charging cable also allows for quick song upload to the device. The 3-piece design has 2 side speakers and a high contrast OLED screen. The screen sits comfortably on the back of the head and shows the song, artist and play status for each use. Neptune attaches securely to goggle straps and rests on the cheekbones as to not interfere with swimming technique.Bone. So buy this Finis Neptune 4GB Waterproof MP3 Player Was £114.99 Now £110.00.