DESC: Product Features: Interface: USB 2.0; Storage Capacity: 8 GB; Screen Size: 2 inch; Main Storage Type: Built-in Memory; Number of Songs: 2000; Usage: Music, Photo Viewing, Video; Audio Format: AAC, MP3, WMA (DRM); Video Format: WMV; Max Video Resolution: 240 x 320; On Screen Display: FM Frequency, Recharging, USB Connection; Outputs: Headphone Jack; Additional Features: Equalizer Controls, FM Stereo Tuner, Sleep Timer; Battery Life: Up to 50 Hours; Battery Type: Rechargeable Li-ion Battery; Power Source: Rechargeable via USB cable; Depth: 0.38 in.; Height: 3.5 in.; Width: 1.75 in.; Weight: 30.4 oz.; Warranty: Lifetime; Family Line: Sony WALKMAN