FINIS Duo 4GB Underwater MP3 Player. The Duo is an MP3 player designed for swimmers that offers the highest quality sound without the use of ear buds. The Duo utilizes a sleek, two-piece design and Bone Conduction audio transmission to deliver crystal clear audio through cheekbones to the inner ear. An integrated clip design secures the Duo to goggle straps to rest on the cheekbones for a comfortable and streamlined fit. A simplified interface offers four buttons to easily navigate between songs, podcasts, audiobooks and other supported audio files. The Duo supports unprotected MP3 and WMA files. The included auxiliary USB cable allows for universal data transfers and charging. The device offers 4GB of flash memory and a Lithium-Ion rechargeable battery life of up to 7 hours. So buy this FINIS Duo 4GB Underwater MP3 Player with Bone Conduction Audio Transmission Now £95.00.