Stylish design with fluorescent holder to strap onto swimmer goggles.</br>USB rechargeable battery, it can work for 8 hours when fully charged.</br>Compliant with international IP*8 water resistance standard.</br>Compliant with high speed USB 2.0 specification.</br>Compliant with Windows 98SE/ME/2000/XP/Vista, Mac OS 8.6+ and Linux 2.4.0 FM optional.</br></br>Product Description</br></br>4GB* internal memory <br> For storing music, videos, playlists and photos. <br> <br> Supported formats <br> Include MP3, AMA, so you can enjoy your favorite tunes. <br> <br> Built-in clip for easy carrying <br> Measures just 2.36" length and weighs only 1.1 oz. for portability to the gym, to swimming pool or when traveling. <br> <br> High-speed USB 2.0 interface <br> For blazing-fast transfer speeds. <br> <br> Waterproof design <br> Enables safe submersion in up to 6.6' of water, allowing you to enjoy your music while you swim or engage in other aquatic activities (do not use in salt water, since it is highly corrosive). <br> <br> Built-in rechargeable lithium-ion battery <br> Provides up to 9 hours of audio playback. <br> <br> Built-in FM tuner <br> Allows simple interfacing with fitness club TVs and enables playing of your favorite FM stations. Integrated voice recorder for on-the-go convenience. <br> <br> PC and Mac compatible <br> For multifunctional use. <br> <br> Package Included <br> <br> 1x MP3 music player 1x waterproof headset 1x User manual</br><br/>http://www.amazon.com/gp/product/B00U8C1F2W