DESC: Product Features: Interface: USB 2.0; Expansion Slots: MicroSD (Transflash) Card; Storage Capacity: 4 GB; Screen Size: 1.8 inch; Main Storage Type: Micro SD Card; Number of Songs: 1000; Usage: Music, Photo Viewing, Recording, Video; Audio Format: MP3, WAV, WMA, WMA (DRM); Video Format: ASF, AVI, DivX, MPEG-1, MPEG-2, MPEG-4, Mov, VOB, WMV; On Screen Display: Battery Level, Elapsed Time; Outputs: Headphone Jack; Additional Features: Built-In Card Reader, FM Stereo Tuner, Radio Recorder, Voice Recorder; Battery Life: Up to 20 Hours; Battery Type: Rechargeable Li-ion Battery; Power Source: Internal Battery; Depth: 0.5 in.; Height: 3.5 in.; Width: 1.7 in.; Weight: 2.7 oz.; Weight and Size: Compact; Family Line: SanDisk Sansa