Best for Swimming?? Running?? Diving?? GYM?? Outwork?? Winter Sports</br>MP3 Digital Audio Format: MP3??WMA?? FM Radio with Auto Station Scanning 100% waterproof?? Marine Grade water IP-X8?? under water 3 M</br>Clip design suitable for Swimming?? Gym?? running?? Driving and Winter sports Built in 4GB Memory?? Built in Rechargeable Battery??12Hour Life. Before use?? please full charge via Usb cable. *Warriing: Charge your MP3 using USB cable connect computer or Using AC holder ( Ourt put: 5V/500mA). Not use a big AC holder(Over 5v/1A or 5V/2A) to charge?? it will m"der Fake full charge status to shorten playing time.</br>Submergible Headphones& Waterproof mp3 player??Both the waterproof mp3 player or earphones can stay submerged under water for more t