Descriptions: This Pen MP3 Player supports MP3, WMA and WAV formats. Super high quality Voice recording function. This wholesale product is excellent design and already popular with customers in market.  Super high quality Voice recording  Support MP3, WAV playback  USB 2.0 full speed  Manufacturer specifications : .Compact Pen shape, full metal body  .Support MP3, WAV playback  .Super high quality Voice recording function .No LCD display  .Memory: 1GB flash memory embedded  .USB interface: USB 2.0 full speed  .Crystal sound quality: Output frequency range: 20Hz to 20kHz   100,000 times  .Battery: Built-in Li-ion battery, up to 6 hours playback time Dime  .Dimension: : 15(Length)*1.2 cm (Diameter)