HuaYang USB Sports Handsfree Headset Headphone MP3 Player for Gym Running Jogging(Green) Extremely comfortable and secure for the most mobile of users, bicyclist, runners, joggers, walkers etc. Support MP3/WMA format With built-in polymer Lithium battery, can play more than 2-4 hours FM Radio: Yes Package Content: Sports Mp3 X1 + Charging Cable X1 (Without retailing packing)