DESC: Product Features: Interface: USB 2.0; Expansion Slots: MicroSD (Transflash) Card; Storage Capacity: 4 GB; Screen Size: 3 inch; Main Storage Type: Built-in Memory; Number of Songs: 1000; Usage: Music, Photo Viewing, Video; Audio Format: MP3, OGG, WMA, WMA (DRM10); Video Format: ASF, AVI, MPEG-4, WMV; Outputs: Headphone Jack; Additional Features: FM Stereo Tuner; Battery Life: Up to 25 Hours; Battery Type: Rechargeable Li-ion Polymer; Power Source: Internal Battery, Rechargeable via USB cable; Depth: 0.41 in.; Height: 3.82 in.; Width: 2.04 in.; Weight and Size: Widescreen