USB Drive Duplicators features: If you are looking for a USB audio player, you should take a look this item. This USB audio player is made of high class material, which enjoys the strong durability. It can greatly meet your usage requirement, can be used for voice recording and audio player. Powered by battery, very convenient to use. Features Color: Black Material: ABS Size: About8.00X2.80X1.40cm/3.14X1.10X0.55in Powered by: AAA Battery (Not included) Memory capacity: 4G Audio format: WMA, MP3 It is made of high class material, which enjoys the strong durability It can greatly meet your usage requirement, can be used for voice recording and audio player The device is powered by battery, bringing convenience to your use Selected good material, not easy to deform or break Compact size, making it portable to use.