Power: Rechargeable battery and solar charging

 Data transferring interface: USB 2.0 full Speed

 Storage media: on-board flash memory (512M/1G/2G/4G)

 Support the format of MP3/WMA&U-DISK

 No display 

 Rechargeable battery

 USB 2.0 Full Speed interface

 Necklace case, touch button.  Additional Info: Weight:About 32 grams (A pair players with battery)  Product Size: 4 x 4 x 1cm Packing: 1PC / PRINTED BOX Meas: 60PCS / CTN / 49.50 x 24 x 31cm Min. Order Qty: 500 PCS

Power: Rechargeable battery and solar changing

 Data transferring interface: USB 2.0 full Speed

 Storage media: on-board flash memory (512M/1G/2G/4G)

 Support the format of MP3/WMA&U-DISK

 No display 

 Rechargeable battery

 USB 2.0 Full Speed interface

 Necklace case, touch button.  Additional Info: Weight:About 32 grams (A pair players with battery)  Product Size: 4 x 4 x 1cm Packing: 1PC / PRINTED BOX Meas: 60PCS / CTN / 49.50 x 24 x 31cm Min. Order Qty: 500 PCS

Mini MP3 Player