- Lightweight and stylish headphone design<br />- Making it ideal for use during jogging/gym work etc.<br />- Build in 2GB flash memory<br />- Stores between 400-500 MP3 tracks<br />- Playback formats: MP3、 WMA<br />- Includes build in rechargeable lithium battery with 3 hours playing time<br />                                                                                                                                Dimensions: 6.1 in x 5.31 in x 1.97 in<br />Weight: 3 oz