Main features: 
1)Support mp3,wma,wav format
2)One AAA battery power supply
3)High USB2.0 speed
4)NO driver procedures are needed above windows 98
5)Capacity:512Mb to 4GB

Packing details:
1PC/1 crystal box,100PCS/Carton
N.W.: 11KG/Carton
G.W.: 12KG/Carton
Carton size: 45 x 34 x 25.2cm