speakers are sealed off behind protective coversThe DUO mp3 player is worn by sliding the swimming goggle straps into the brackets of each piece and placing the speaker parts on the cheekbones or towards the base of your head (behind your ears), below the goggle strap.
blinking red light means low battery: Up to 7 hours of battery lifeTo skip back a song, double press the + triangle button and to increase volume press and hold the same button. To decrease volume, press and hold the - triangle button.
user manual included
As far as sound quality, the volume sound of the Finis DUO can go very loud and the sound response is very clear when submerged in the water, even when swimming breaststroke where you swim in and out of the water thanks to bone conduction audio technology, which literary means transmitting sound via the bones of the skull!
magnet maintains the contacts with the gold-plated connection pinsTo upload music onto the Finis DUO mp3 player and recharge the battery, you use the magnetic USB charging dock. Connect the USB side to a PC or laptop and wait for the DUO driver to automatically install in your computer. Once installed, the autoplay prompt will automatically show on your screen.
Click "open folder to view files" and from here you will be able to drag and drop non-protected mp3, WMA, AAC and purchased AAC files that are converted into mp3 files. You get around 4GB of storage space to store music tracks.
As far as maintenance of the DUO mp3 player, you want to rinse off the DUO with fresh water after each use. Also, the DUO is IPX8 waterproof to 3 meters and 30 minutes, which means the DUO will maintain its waterproof integrity for 30 min at 3 meters.