Features:

• Support MP3 Format.
  AMT (Automatic Music Transformer: support WMA, RM, OGG, AAC(m4a), CD, WAV, APE, WV, FLAC etc.)
• Built in high quality lithium battery.Fast charge: 100V-240V
• Music play:5- 6 hours
• USB 2.0 high speed.
• Measure: 62.6 *33.3*14mm
• Weight: 20g